feat: work on chronology

gradle.properties

@@ -1,4 +1,4 @@
 # Warning, "version" should be the same in gradle.properties and Version.java
 # Any idea anyone how to magically synchronize those :-) ?
-version = 1.2023.13beta3
+version = 1.2023.13beta4
 org.gradle.workers.max = 3

src/com/plantuml/api/cheerpj/v1/DirectDraw.java

@@ -53,6 +53,7 @@ import net.sourceforge.plantuml.BlockUml;
 import net.sourceforge.plantuml.BlockUmlBuilder;
 import net.sourceforge.plantuml.ErrorUml;
 import net.sourceforge.plantuml.FileFormat;
+import net.sourceforge.plantuml.FileFormatOption;
 import net.sourceforge.plantuml.core.Diagram;
 import net.sourceforge.plantuml.error.PSystemError;
 import net.sourceforge.plantuml.klimt.color.ColorMapper;
@@ -122,7 +123,7 @@ public class DirectDraw {
 			ug.apply(back).apply(back.bg()).draw(URectangle.build(frameWidth, frameHeight));
 			WasmLog.log("...drawing...");
 
-			system.exportDiagramGraphic(ug);
+			system.exportDiagramGraphic(ug, new FileFormatOption(FileFormat.PNG));
 
 			WasmLog.log("done!");
 

src/com/plantuml/api/cheerpj/v1/Raw.java

@@ -55,6 +55,7 @@ import net.sourceforge.plantuml.BlockUmlBuilder;
 import net.sourceforge.plantuml.EmptyImageBuilder;
 import net.sourceforge.plantuml.ErrorUml;
 import net.sourceforge.plantuml.FileFormat;
+import net.sourceforge.plantuml.FileFormatOption;
 import net.sourceforge.plantuml.api.ImageDataSimple;
 import net.sourceforge.plantuml.core.Diagram;
 import net.sourceforge.plantuml.core.ImageData;
@@ -124,7 +125,7 @@ public class Raw {
 			ug.resetMax();
 			WasmLog.log("...drawing...");
 
-			system.exportDiagramGraphic(ug);
+			system.exportDiagramGraphic(ug, new FileFormatOption(FileFormat.PNG));
 
 			final int width = (int) (2 + ug.getMaxX());
 			final int height = (int) (2 + ug.getMaxY());
@@ -208,7 +209,7 @@ public class Raw {
 			ug.resetMax();
 			WasmLog.log("...drawing...");
 
-			system.exportDiagramGraphic(ug);
+			system.exportDiagramGraphic(ug, new FileFormatOption(FileFormat.PNG));
 
 			final int width = (int) (2 + ug.getMaxX());
 			final int height = (int) (2 + ug.getMaxY());

src/net/atmp/CucaDiagram.java

@@ -376,13 +376,13 @@ public abstract class CucaDiagram extends UmlDiagram implements GroupHierarchy,
 	// ::done
 
 	@Override
-	final public void exportDiagramGraphic(UGraphic ug) {
+	final public void exportDiagramGraphic(UGraphic ug, FileFormatOption fileFormatOption) {
 		final CucaDiagramFileMaker maker = new CucaDiagramFileMakerSmetana(this, ug.getStringBounder());
 		maker.createOneGraphic(ug);
 	}
 
 	@Override
-	final protected TextBlock getTextBlock() {
+	final protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		throw new UnsupportedOperationException();
 	}
 

src/net/sourceforge/plantuml/AbstractPSystem.java

@@ -114,14 +114,14 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	final public String getMetadata() {
-		if (source == null) 
+		if (source == null)
 			return getVersion();
-		
+
 		final String rawString = source.getRawString("\n");
 		final String plainString = source.getPlainString("\n");
-		if (rawString != null && rawString.equals(plainString)) 
+		if (rawString != null && rawString.equals(plainString))
 			return rawString + BackSlash.NEWLINE + getVersion();
-		
+
 		return rawString + BackSlash.NEWLINE + plainString + BackSlash.NEWLINE + getVersion();
 	}
 
@@ -130,9 +130,9 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	final public long seed() {
-		if (source == null) 
+		if (source == null)
 			return 42;
-		
+
 		return getSource().seed();
 	}
 
@@ -159,9 +159,9 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	public DisplayPositionned getTitle() {
-		if (source == null) 
+		if (source == null)
 			return DisplayPositioned.single(Display.empty(), HorizontalAlignment.CENTER, VerticalAlignment.TOP);
-		
+
 		return DisplayPositioned.single(source.getTitle(), HorizontalAlignment.CENTER, VerticalAlignment.TOP);
 	}
 
@@ -247,7 +247,7 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	@Override
-	public void exportDiagramGraphic(UGraphic ug) {
+	public void exportDiagramGraphic(UGraphic ug, FileFormatOption fileFormatOption) {
 		final UFont font = UFont.monospaced(14);
 		final FontConfiguration fc = FontConfiguration.blackBlueTrue(font);
 		final UText text = UText.build("Not implemented yet for " + getClass().getName(), fc);

src/net/sourceforge/plantuml/Option.java

@@ -440,9 +440,11 @@ public class Option {
 
 			} else if (s.equalsIgnoreCase("-preproc")) {
 				preprocessorOutput = OptionPreprocOutputMode.NORMAL;
+				setFileFormatOption(new FileFormatOption(FileFormat.PREPROC));
 
 			} else if (s.equalsIgnoreCase("-cypher")) {
 				preprocessorOutput = OptionPreprocOutputMode.CYPHER;
+				setFileFormatOption(new FileFormatOption(FileFormat.PREPROC));
 
 			} else if (s.equalsIgnoreCase("-checkmetadata")) {
 				checkMetadata = true;

src/net/sourceforge/plantuml/PSystemBuilder.java

@@ -48,6 +48,7 @@ import net.sourceforge.plantuml.activitydiagram3.ActivityDiagramFactory3;
 import net.sourceforge.plantuml.api.PSystemFactory;
 import net.sourceforge.plantuml.board.BoardDiagramFactory;
 import net.sourceforge.plantuml.bpm.BpmDiagramFactory;
+import net.sourceforge.plantuml.chronology.ChronologyDiagramFactory;
 import net.sourceforge.plantuml.classdiagram.ClassDiagramFactory;
 import net.sourceforge.plantuml.core.Diagram;
 import net.sourceforge.plantuml.core.DiagramType;
@@ -223,7 +224,8 @@ public class PSystemBuilder {
 		// factories.add(new PSystemSudokuFactory());
 		// ::done
 
-		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or __LGPL__
+		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or
+		// __LGPL__
 		factories.add(new PSystemJcckitFactory());
 		factories.add(new PSystemSudokuFactory());
 		// ::done
@@ -247,11 +249,13 @@ public class PSystemBuilder {
 		// ::done
 
 		factories.add(new PSystemCharlieFactory());
-		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or __LGPL__
+		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or
+		// __LGPL__
 		factories.add(new PSystemXearthFactory());
 		// ::done
 
 		factories.add(new GanttDiagramFactory());
+		factories.add(new ChronologyDiagramFactory());
 		factories.add(new FlowDiagramFactory());
 
 		// ::comment when __CORE__

src/net/sourceforge/plantuml/PlainDiagram.java

@@ -66,14 +66,13 @@ public abstract class PlainDiagram extends AbstractPSystem {
 	}
 
 	@Override
-	public void exportDiagramGraphic(UGraphic ug) {
-		final FileFormatOption option = new FileFormatOption(FileFormat.PNG);
+	public void exportDiagramGraphic(UGraphic ug, FileFormatOption fileFormatOption) {
 		try {
-			final UDrawable rootDrawable = getRootDrawable(option);
+			final UDrawable rootDrawable = getRootDrawable(fileFormatOption);
 			rootDrawable.drawU(ug);
 		} catch (IOException e) {
 			e.printStackTrace();
-			super.exportDiagramGraphic(ug);
+			super.exportDiagramGraphic(ug, fileFormatOption);
 		}
 	}
 

src/net/sourceforge/plantuml/SourceStringReader.java

@@ -54,6 +54,7 @@ import net.sourceforge.plantuml.klimt.shape.GraphicStrings;
 import net.sourceforge.plantuml.klimt.shape.TextBlock;
 import net.sourceforge.plantuml.preproc.Defines;
 import net.sourceforge.plantuml.security.SFile;
+import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.utils.Log;
 
 public class SourceStringReader {
@@ -157,6 +158,14 @@ public class SourceStringReader {
 			noValidStartFound(os, fileFormatOption);
 			return null;
 		}
+		if (fileFormatOption.getFileFormat() == FileFormat.PREPROC) {
+			final BlockUml first = blocks.get(0);
+			for (StringLocated s : first.getData()) {
+				os.write(s.getString().getBytes(UTF_8));
+				os.write("\n".getBytes(UTF_8));
+			}
+			return new DiagramDescription("PREPROC");
+		}
 		for (BlockUml b : blocks) {
 			final Diagram system = b.getDiagram();
 			final int nbInSystem = system.getNbImages();
@@ -231,7 +240,8 @@ public class SourceStringReader {
 	}
 
 	public ImageData noValidStartFound(OutputStream os, FileFormatOption fileFormatOption) throws IOException {
-		final TextBlock error = GraphicStrings.createForError(Arrays.asList("No valid @start/@end found, please check the version"),
+		final TextBlock error = GraphicStrings.createForError(
+				Arrays.asList("No valid @start/@end found, please check the version"),
 				fileFormatOption.isUseRedForError());
 
 		return plainImageBuilder(error, fileFormatOption).write(os);

src/net/sourceforge/plantuml/TitledDiagram.java

@@ -253,11 +253,11 @@ public abstract class TitledDiagram extends AbstractPSystem implements Diagram,
 
 	}
 
-	protected abstract TextBlock getTextBlock();
+	protected abstract TextBlock getTextMainBlock(FileFormatOption fileFormatOption);
 
 	@Override
-	public void exportDiagramGraphic(UGraphic ug) {
-		final TextBlock textBlock = getTextBlock();
+	public void exportDiagramGraphic(UGraphic ug, FileFormatOption fileFormatOption) {
+		final TextBlock textBlock = getTextMainBlock(fileFormatOption);
 		textBlock.drawU(ug);
 	}
 

src/net/sourceforge/plantuml/activitydiagram/command/CommandLinkActivity.java

@@ -61,6 +61,7 @@ import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexPartialMatch;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -81,9 +82,7 @@ public class CommandLinkActivity extends SingleLineCommand2<ActivityDiagram> {
 								new RegexLeaf("CODE", "([%pLN][%pLN_.]*)"), //
 								new RegexLeaf("BAR", "(?:==+)[%s]*([%pLN_.]+)[%s]*(?:==+)"), //
 								new RegexLeaf("QUOTED", "[%g]([^%g]+)[%g](?:[%s]+as[%s]+([%pLN_.]+))?"))), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				ColorParser.exp2(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //
@@ -105,9 +104,7 @@ public class CommandLinkActivity extends SingleLineCommand2<ActivityDiagram> {
 						new RegexLeaf("BAR2", "(?:==+)[%s]*([%pLN_.]+)[%s]*(?:==+)"), //
 						new RegexLeaf("QUOTED2", "[%g]([^%g]+)[%g](?:[%s]+as[%s]+([%pLN][%pLN_.]*))?"), //
 						new RegexLeaf("QUOTED_INVISIBLE2", "(\\w.*?)")), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE2"), //
 				new RegexOptional( //
 						new RegexConcat( //
 								new RegexLeaf("in"), //

src/net/sourceforge/plantuml/activitydiagram/command/CommandLinkLongActivity.java

@@ -64,6 +64,7 @@ import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.text.BackSlash;
 import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.url.Url;
@@ -91,9 +92,7 @@ public class CommandLinkLongActivity extends CommandMultilines2<ActivityDiagram>
 								new RegexLeaf("CODE", "([%pLN][%pLN_.]*)"), //
 								new RegexLeaf("BAR", "(?:==+)[%s]*([%pLN_.]+)[%s]*(?:==+)"), //
 								new RegexLeaf("QUOTED", "[%g]([^%g]+)[%g](?:[%s]+as[%s]+([%pLN_.]+))?"))), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("BACKCOLOR", "(#\\w+)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/activitydiagram/command/CommandPartition.java

@@ -52,6 +52,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public class CommandPartition extends SingleLineCommand2<ActivityDiagram> {
@@ -69,9 +70,7 @@ public class CommandPartition extends SingleLineCommand2<ActivityDiagram> {
 				new RegexOr(//
 						color().getRegex(), //
 						new RegexLeaf("LEGACYCOLORIGNORED", "(#[0-9a-fA-F]{6}|#?\\w+)?")), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("\\{?"), //
 				RegexLeaf.end());
 	}
@@ -89,12 +88,10 @@ public class CommandPartition extends SingleLineCommand2<ActivityDiagram> {
 		final Entity p = diagram.getCurrentGroup();
 
 		final Colors colors = color().getColor(arg, diagram.getSkinParam().getIHtmlColorSet());
-		if (colors.isEmpty() == false) {
+		if (colors.isEmpty() == false)
 			p.setColors(colors);
-		}
-		if (arg.get("STEREOTYPE", 0) != null) {
-			p.setStereotype(Stereotype.build(arg.get("STEREOTYPE", 0)));
-		}
+
+		p.setStereotype(Stereotype.build(arg.get("STEREOTYPE", 0)));
 
 		return CommandExecutionResult.ok();
 	}

src/net/sourceforge/plantuml/activitydiagram3/ActivityDiagram3.java

@@ -40,7 +40,6 @@ import java.io.OutputStream;
 import java.util.Map;
 import java.util.Objects;
 
-import net.sourceforge.plantuml.FileFormat;
 import net.sourceforge.plantuml.FileFormatOption;
 import net.sourceforge.plantuml.UmlDiagram;
 import net.sourceforge.plantuml.activitydiagram3.ftile.BoxStyle;
@@ -208,8 +207,7 @@ public class ActivityDiagram3 extends UmlDiagram {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
-		final FileFormatOption fileFormatOption = new FileFormatOption(FileFormat.PNG);
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		final StringBounder stringBounder = fileFormatOption.getDefaultStringBounder(getSkinParam());
 		return getTextBlock(stringBounder);
 	}
@@ -318,10 +316,10 @@ public class ActivityDiagram3 extends UmlDiagram {
 		return CommandExecutionResult.error("Cannot find switch");
 	}
 
-	public void startIf(Display test, Display whenThen, HColor color, Url url) {
+	public void startIf(Display test, Display whenThen, HColor color, Url url, Stereotype stereotype) {
 		manageSwimlaneStrategy();
 		final InstructionIf instructionIf = new InstructionIf(swinlanes.getCurrentSwimlane(), current(), test,
-				LinkRendering.none().withDisplay(whenThen), nextLinkRenderer(), color, getSkinParam(), url);
+				LinkRendering.none().withDisplay(whenThen), nextLinkRenderer(), color, getSkinParam(), url, stereotype);
 		current().add(instructionIf);
 		setNextLinkRendererInternal(LinkRendering.none());
 		setCurrent(instructionIf);
@@ -392,7 +390,8 @@ public class ActivityDiagram3 extends UmlDiagram {
 		manageSwimlaneStrategy();
 		if (current() instanceof InstructionRepeat) {
 			final InstructionRepeat instructionRepeat = (InstructionRepeat) current();
-			instructionRepeat.setBackward(label, swinlanes.getCurrentSwimlane(), boxStyle, incoming1, incoming2, stereotype);
+			instructionRepeat.setBackward(label, swinlanes.getCurrentSwimlane(), boxStyle, incoming1, incoming2,
+					stereotype);
 			return CommandExecutionResult.ok();
 		}
 		if (current() instanceof InstructionWhile) {

src/net/sourceforge/plantuml/activitydiagram3/Branch.java

@@ -57,6 +57,7 @@ import net.sourceforge.plantuml.klimt.shape.TextBlock;
 import net.sourceforge.plantuml.klimt.shape.TextBlockUtils;
 import net.sourceforge.plantuml.sequencediagram.NotePosition;
 import net.sourceforge.plantuml.sequencediagram.NoteType;
+import net.sourceforge.plantuml.stereo.Stereotype;
 import net.sourceforge.plantuml.style.ISkinParam;
 import net.sourceforge.plantuml.style.PName;
 import net.sourceforge.plantuml.style.SName;
@@ -95,12 +96,12 @@ public class Branch {
 	}
 
 	public Branch(StyleBuilder styleBuilder, Swimlane swimlane, LinkRendering labelPositive, Display labelTest,
-			HColor color, LinkRendering inlabel) {
+			HColor color, LinkRendering inlabel, Stereotype stereotype) {
 		this.inlabel = Objects.requireNonNull(inlabel);
 		this.labelTest = Objects.requireNonNull(labelTest);
 		this.labelPositive = Objects.requireNonNull(labelPositive);
 
-		final Style style = getDefaultStyleDefinitionDiamond().getMergedStyle(styleBuilder);
+		final Style style = getDefaultStyleDefinitionDiamond().withTOBECHANGED(stereotype).getMergedStyle(styleBuilder);
 		this.color = color == null
 				? style.value(PName.BackGroundColor).asColor(styleBuilder.getSkinParam().getIHtmlColorSet())
 				: color;

src/net/sourceforge/plantuml/activitydiagram3/InstructionIf.java

@@ -47,7 +47,6 @@ import net.sourceforge.plantuml.activitydiagram3.ftile.FtileDecorateWelding;
 import net.sourceforge.plantuml.activitydiagram3.ftile.FtileFactory;
 import net.sourceforge.plantuml.activitydiagram3.ftile.Swimlane;
 import net.sourceforge.plantuml.activitydiagram3.ftile.WeldingPoint;
-import net.sourceforge.plantuml.activitydiagram3.ftile.vcompact.FtileWithNoteOpale;
 import net.sourceforge.plantuml.activitydiagram3.gtile.Gtile;
 import net.sourceforge.plantuml.activitydiagram3.gtile.GtileIfAlone;
 import net.sourceforge.plantuml.activitydiagram3.gtile.GtileIfHexagon;
@@ -56,9 +55,9 @@ import net.sourceforge.plantuml.klimt.color.Colors;
 import net.sourceforge.plantuml.klimt.color.HColor;
 import net.sourceforge.plantuml.klimt.creole.Display;
 import net.sourceforge.plantuml.klimt.font.StringBounder;
-import net.sourceforge.plantuml.klimt.geom.VerticalAlignment;
 import net.sourceforge.plantuml.sequencediagram.NotePosition;
 import net.sourceforge.plantuml.sequencediagram.NoteType;
+import net.sourceforge.plantuml.stereo.Stereotype;
 import net.sourceforge.plantuml.style.ISkinParam;
 import net.sourceforge.plantuml.url.Url;
 
@@ -75,6 +74,7 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 	private Branch current;
 	private final LinkRendering topInlinkRendering;
 	private LinkRendering outColor = LinkRendering.none();
+	private final Stereotype stereotype;
 
 	private final Swimlane swimlane;
 
@@ -91,14 +91,15 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 	}
 
 	public InstructionIf(Swimlane swimlane, Instruction parent, Display labelTest, LinkRendering whenThen,
-			LinkRendering inlinkRendering, HColor color, ISkinParam skinParam, Url url) {
+			LinkRendering inlinkRendering, HColor color, ISkinParam skinParam, Url url, Stereotype stereotype) {
 		this.url = url;
+		this.stereotype = stereotype;
 		this.parent = parent;
 		this.skinParam = skinParam;
 		this.topInlinkRendering = Objects.requireNonNull(inlinkRendering);
 		this.swimlane = swimlane;
 		this.thens.add(new Branch(skinParam.getCurrentStyleBuilder(), swimlane, whenThen, labelTest, color,
-				LinkRendering.none()));
+				LinkRendering.none(), stereotype));
 		this.current = this.thens.get(0);
 	}
 
@@ -138,11 +139,11 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 
 		if (elseBranch == null)
 			this.elseBranch = new Branch(skinParam.getCurrentStyleBuilder(), swimlane, LinkRendering.none(),
-					Display.NULL, null, LinkRendering.none());
+					Display.NULL, null, LinkRendering.none(), stereotype);
 
 		elseBranch.updateFtile(factory);
 		Ftile result = factory.createIf(swimlane, thens, elseBranch, outColor, topInlinkRendering, url,
-				getPositionedNotes());
+				getPositionedNotes(), stereotype);
 //		if (getPositionedNotes().size() > 0)
 //			result = FtileWithNoteOpale.create(result, getPositionedNotes(), false, VerticalAlignment.CENTER);
 
@@ -169,7 +170,7 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 
 		this.current.setInlinkRendering(nextLinkRenderer);
 		this.elseBranch = new Branch(skinParam.getCurrentStyleBuilder(), swimlane, whenElse, Display.NULL, null,
-				LinkRendering.none());
+				LinkRendering.none(), stereotype);
 		this.current = elseBranch;
 		return true;
 	}
@@ -180,7 +181,8 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 			return false;
 
 		this.current.setSpecial(nextLinkRenderer);
-		this.current = new Branch(skinParam.getCurrentStyleBuilder(), swimlane, whenThen, test, color, inlabel);
+		this.current = new Branch(skinParam.getCurrentStyleBuilder(), swimlane, whenThen, test, color, inlabel,
+				stereotype);
 		this.thens.add(current);
 		return true;
 
@@ -190,7 +192,7 @@ public class InstructionIf extends WithNote implements Instruction, InstructionC
 		endifCalled = true;
 		if (elseBranch == null)
 			this.elseBranch = new Branch(skinParam.getCurrentStyleBuilder(), swimlane, LinkRendering.none(),
-					Display.NULL, null, LinkRendering.none());
+					Display.NULL, null, LinkRendering.none(), stereotype);
 
 		this.elseBranch.setSpecial(nextLinkRenderer);
 		this.current.setInlinkRendering(nextLinkRenderer);

src/net/sourceforge/plantuml/activitydiagram3/InstructionSwitch.java

@@ -58,7 +58,7 @@ import net.sourceforge.plantuml.sequencediagram.NoteType;
 import net.sourceforge.plantuml.style.ISkinParam;
 
 public class InstructionSwitch extends WithNote implements Instruction, InstructionCollection {
-    // ::remove folder when __HAXE__
+	// ::remove folder when __HAXE__
 
 	private final List<Branch> switches = new ArrayList<>();
 	private final ISkinParam skinParam;
@@ -166,7 +166,7 @@ public class InstructionSwitch extends WithNote implements Instruction, Instruct
 			this.current.setSpecial(nextLinkRenderer);
 		this.current = new Branch(skinParam.getCurrentStyleBuilder(), swimlane,
 				LinkRendering.none().withDisplay(labelCase), labelCase, null,
-				LinkRendering.none().withDisplay(labelCase));
+				LinkRendering.none().withDisplay(labelCase), null);
 		this.switches.add(this.current);
 		return true;
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandActivity3.java

@@ -52,6 +52,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -104,9 +105,7 @@ public class CommandActivity3 extends SingleLineCommand2<ActivityDiagram3> {
 		return RegexConcat.build(CommandActivity3.class.getName(), RegexLeaf.start(), //
 				UrlBuilder.OPTIONAL, //
 				color().getRegex(), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf(":"), //
 				new RegexLeaf("LABEL", "(.*?)"), //
 				new RegexLeaf("STYLE", endingGroupShort()), //

src/net/sourceforge/plantuml/activitydiagram3/command/CommandArrow3.java

@@ -78,9 +78,8 @@ public class CommandArrow3 extends SingleLineCommand2<ActivityDiagram3> {
 			diagram.setColorNextArrow(rainbow);
 		}
 		final String label = arg.get("LABEL", 0);
-		if (label != null && label.length() > 0) {
+		if (label != null && label.length() > 0)
 			diagram.setLabelNextArrow(Display.getWithNewlines(label));
-		}
 
 		return CommandExecutionResult.ok();
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandIf2.java

@@ -47,6 +47,8 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
+import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -63,7 +65,7 @@ public class CommandIf2 extends SingleLineCommand2<ActivityDiagram3> {
 				UrlBuilder.OPTIONAL, //
 				ColorParser.exp4(), //
 				new RegexLeaf("if"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("\\("), //
 				new RegexLeaf("TEST", "(.*?)"), //
 				new RegexLeaf("\\)"), //
@@ -85,9 +87,8 @@ public class CommandIf2 extends SingleLineCommand2<ActivityDiagram3> {
 		final HColor color = s == null ? null : diagram.getSkinParam().getIHtmlColorSet().getColor(s);
 
 		String test = arg.get("TEST", 0);
-		if (test.length() == 0) {
+		if (test.length() == 0)
 			test = null;
-		}
 
 		final Url url;
 		if (arg.get("URL", 0) == null) {
@@ -96,8 +97,9 @@ public class CommandIf2 extends SingleLineCommand2<ActivityDiagram3> {
 			final UrlBuilder urlBuilder = new UrlBuilder(diagram.getSkinParam().getValue("topurl"), UrlMode.STRICT);
 			url = urlBuilder.getUrl(arg.get("URL", 0));
 		}
+		final Stereotype stereotype = Stereotype.build(arg.get("STEREO", 0));
 
-		diagram.startIf(Display.getWithNewlines(test), Display.getWithNewlines(arg.get("WHEN", 0)), color, url);
+		diagram.startIf(Display.getWithNewlines(test), Display.getWithNewlines(arg.get("WHEN", 0)), color, url, stereotype);
 
 		return CommandExecutionResult.ok();
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandIf4.java

@@ -82,10 +82,10 @@ public class CommandIf4 extends SingleLineCommand2<ActivityDiagram3> {
 		final HColor color = s == null ? null : diagram.getSkinParam().getIHtmlColorSet().getColor(s);
 
 		String test = arg.get("TEST", 0);
-		if (test.length() == 0) {
+		if (test.length() == 0)
 			test = null;
-		}
-		diagram.startIf(Display.getWithNewlines(test), Display.getWithNewlines(arg.get("WHEN", 0)), color, null);
+
+		diagram.startIf(Display.getWithNewlines(test), Display.getWithNewlines(arg.get("WHEN", 0)), color, null, null);
 
 		return CommandExecutionResult.ok();
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandIfLegacy1.java

@@ -72,7 +72,7 @@ public class CommandIfLegacy1 extends SingleLineCommand2<ActivityDiagram3> {
 	protected CommandExecutionResult executeArg(ActivityDiagram3 diagram, LineLocation location, RegexResult arg) {
 
 		diagram.startIf(Display.getWithNewlines(arg.get("TEST", 0)), Display.getWithNewlines(arg.get("WHEN", 0)), null,
-				null);
+				null, null);
 
 		return CommandExecutionResult.ok();
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandPartition3.java

@@ -54,6 +54,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.style.PName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.utils.LineLocation;
@@ -77,9 +78,7 @@ public class CommandPartition3 extends SingleLineCommand2<ActivityDiagram3> {
 						new RegexConcat( //
 								RegexLeaf.spaceOneOrMore(), //
 								color("BACK2").getRegex())), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("\\{?"), //
 				RegexLeaf.end());
 	}

src/net/sourceforge/plantuml/activitydiagram3/command/CommandRepeat3.java

@@ -52,6 +52,7 @@ import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public class CommandRepeat3 extends SingleLineCommand2<ActivityDiagram3> {
@@ -62,7 +63,7 @@ public class CommandRepeat3 extends SingleLineCommand2<ActivityDiagram3> {
 
 	static IRegex getRegexConcat() {
 		return RegexConcat.build(CommandRepeat3.class.getName(), RegexLeaf.start(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
+				StereotypePattern.optional("STEREO"), //
 				ColorParser.exp4(), //
 				new RegexLeaf("repeat"), //
 				RegexLeaf.spaceZeroOrMore(), //

src/net/sourceforge/plantuml/activitydiagram3/ftile/FtileFactory.java

@@ -89,7 +89,7 @@ public interface FtileFactory {
 			HColor color, Instruction specialOut, Ftile backward, LinkRendering incoming1, LinkRendering incoming2);
 
 	public Ftile createIf(Swimlane swimlane, List<Branch> thens, Branch elseBranch, LinkRendering outColor,
-			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes);
+			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes, Stereotype stereotype);
 
 	public Ftile createSwitch(Swimlane swimlane, List<Branch> branches, LinkRendering afterEndwhile,
 			LinkRendering topInlinkRendering, Display labelTest);

src/net/sourceforge/plantuml/activitydiagram3/ftile/FtileFactoryDelegator.java

@@ -188,8 +188,8 @@ public class FtileFactoryDelegator implements FtileFactory {
 
 	@Override
 	public Ftile createIf(Swimlane swimlane, List<Branch> thens, Branch elseBranch, LinkRendering afterEndwhile,
-			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes) {
-		return factory.createIf(swimlane, thens, elseBranch, afterEndwhile, topInlinkRendering, url, notes);
+			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes, Stereotype stereotype) {
+		return factory.createIf(swimlane, thens, elseBranch, afterEndwhile, topInlinkRendering, url, notes, stereotype);
 	}
 
 	@Override

src/net/sourceforge/plantuml/activitydiagram3/ftile/vcompact/FtileFactoryDelegatorIf.java

@@ -48,6 +48,7 @@ import net.sourceforge.plantuml.activitydiagram3.ftile.Swimlane;
 import net.sourceforge.plantuml.activitydiagram3.ftile.vcompact.cond.ConditionalBuilder;
 import net.sourceforge.plantuml.klimt.color.HColor;
 import net.sourceforge.plantuml.skin.Pragma;
+import net.sourceforge.plantuml.stereo.Stereotype;
 import net.sourceforge.plantuml.style.PName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.svek.ConditionEndStyle;
@@ -65,14 +66,14 @@ public class FtileFactoryDelegatorIf extends FtileFactoryDelegator {
 
 	@Override
 	public Ftile createIf(Swimlane swimlane, List<Branch> thens, Branch elseBranch, LinkRendering afterEndwhile,
-			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes) {
+			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes, Stereotype stereotype) {
 
 		final ConditionStyle conditionStyle = skinParam().getConditionStyle();
 		final ConditionEndStyle conditionEndStyle = skinParam().getConditionEndStyle();
 		final Branch branch0 = thens.get(0);
 
 		final Style styleArrow = getDefaultStyleDefinitionArrow().getMergedStyle(skinParam().getCurrentStyleBuilder());
-		final Style styleDiamond = getDefaultStyleDefinitionDiamond()
+		final Style styleDiamond = getDefaultStyleDefinitionDiamond().withTOBECHANGED(stereotype)
 				.getMergedStyle(skinParam().getCurrentStyleBuilder());
 		final HColor backColor = branch0.getColor() == null
 				? styleDiamond.value(PName.BackGroundColor).asColor(skinParam().getIHtmlColorSet())

src/net/sourceforge/plantuml/activitydiagram3/ftile/vcompact/FtileForkInner.java

@@ -81,9 +81,9 @@ class FtileForkInner extends AbstractFtile {
 
 	public static Set<Swimlane> mergeSwimlanes(List<Ftile> tiles) {
 		final Set<Swimlane> result = new HashSet<>();
-		for (Ftile tile : tiles) {
+		for (Ftile tile : tiles)
 			result.addAll(tile.getSwimlanes());
-		}
+
 		return Collections.unmodifiableSet(result);
 	}
 
@@ -105,9 +105,9 @@ class FtileForkInner extends AbstractFtile {
 		for (Ftile ftile : forks) {
 			final XDimension2D dim = ftile.calculateDimension(stringBounder);
 			width += dim.getWidth();
-			if (dim.getHeight() > height) {
+			if (dim.getHeight() > height)
 				height = dim.getHeight();
-			}
+
 		}
 		final XDimension2D dimTotal = new XDimension2D(width, height);
 		return new FtileGeometry(dimTotal, dimTotal.getWidth() / 2, 0, dimTotal.getHeight());
@@ -116,9 +116,9 @@ class FtileForkInner extends AbstractFtile {
 	public UTranslate getTranslateFor(Ftile searched, StringBounder stringBounder) {
 		double xpos = 0;
 		for (Ftile ftile : forks) {
-			if (ftile == searched) {
+			if (ftile == searched)
 				return UTranslate.dx(xpos);
-			}
+
 			final XDimension2D dim = ftile.calculateDimension(stringBounder);
 			xpos += dim.getWidth();
 		}

src/net/sourceforge/plantuml/activitydiagram3/ftile/vcompact/ParallelBuilderFork.java

@@ -85,7 +85,7 @@ public class ParallelBuilderFork extends AbstractParallelFtilesBuilder {
 		Ftile result = middle;
 		final List<Connection> conns = new ArrayList<>();
 		final Swimlane swimlaneBlack = in;
-		final Style style = getStyleSignature().getMergedStyle(skinParam().getCurrentStyleBuilder());
+		final Style style = getStyleSignatureArrow().getMergedStyle(skinParam().getCurrentStyleBuilder());
 		final Ftile black = new FtileBlackBlock(skinParam(), swimlaneBlack);
 		double x = 0;
 		for (Ftile tmp : list99) {

src/net/sourceforge/plantuml/activitydiagram3/ftile/vcompact/VCompactFactory.java

@@ -169,7 +169,7 @@ public class VCompactFactory implements FtileFactory {
 
 	@Override
 	public Ftile createIf(Swimlane swimlane, List<Branch> thens, Branch elseBranch, LinkRendering afterEndwhile,
-			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes) {
+			LinkRendering topInlinkRendering, Url url, Collection<PositionedNote> notes, Stereotype stereotype) {
 		final List<Ftile> ftiles = new ArrayList<>();
 		for (Branch branch : thens)
 			ftiles.add(branch.getFtile());

src/net/sourceforge/plantuml/board/BoardDiagram.java

@@ -73,11 +73,11 @@ public class BoardDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {

src/net/sourceforge/plantuml/bpm/BpmDiagram.java

@@ -194,7 +194,7 @@ public class BpmDiagram extends UmlDiagram {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		throw new UnsupportedOperationException();
 	}
 }

src/net/sourceforge/plantuml/chronology/ChronologyDiagram.java

@@ -0,0 +1,853 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+
+import net.sourceforge.plantuml.FileFormatOption;
+import net.sourceforge.plantuml.TitledDiagram;
+import net.sourceforge.plantuml.WithSprite;
+import net.sourceforge.plantuml.command.CommandExecutionResult;
+import net.sourceforge.plantuml.core.DiagramDescription;
+import net.sourceforge.plantuml.core.ImageData;
+import net.sourceforge.plantuml.core.UmlSource;
+import net.sourceforge.plantuml.klimt.UTranslate;
+import net.sourceforge.plantuml.klimt.color.HColorSet;
+import net.sourceforge.plantuml.klimt.drawing.UGraphic;
+import net.sourceforge.plantuml.klimt.font.StringBounder;
+import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
+import net.sourceforge.plantuml.klimt.geom.XDimension2D;
+import net.sourceforge.plantuml.klimt.shape.AbstractTextBlock;
+import net.sourceforge.plantuml.klimt.shape.TextBlock;
+import net.sourceforge.plantuml.project.GanttStyle;
+import net.sourceforge.plantuml.project.LabelPosition;
+import net.sourceforge.plantuml.project.LabelStrategy;
+import net.sourceforge.plantuml.project.LoadPlanable;
+import net.sourceforge.plantuml.project.TimeHeaderParameters;
+import net.sourceforge.plantuml.project.ToTaskDraw;
+import net.sourceforge.plantuml.project.core.PrintScale;
+import net.sourceforge.plantuml.project.core.Task;
+import net.sourceforge.plantuml.project.core.TaskCode;
+import net.sourceforge.plantuml.project.core.TaskGroup;
+import net.sourceforge.plantuml.project.draw.TaskDraw;
+import net.sourceforge.plantuml.project.draw.TaskDrawDiamond;
+import net.sourceforge.plantuml.project.draw.TimeHeader;
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.project.timescale.TimeScale;
+import net.sourceforge.plantuml.real.Real;
+import net.sourceforge.plantuml.real.RealOrigin;
+import net.sourceforge.plantuml.real.RealUtils;
+import net.sourceforge.plantuml.skin.UmlDiagramType;
+import net.sourceforge.plantuml.style.SName;
+import net.sourceforge.plantuml.style.Style;
+import net.sourceforge.plantuml.style.StyleSignatureBasic;
+
+public class ChronologyDiagram extends TitledDiagram implements ToTaskDraw, WithSprite, GanttStyle {
+
+	private final Map<Task, TaskDraw> draws = new LinkedHashMap<Task, TaskDraw>();
+	private final Map<TaskCode, Task> tasks = new LinkedHashMap<TaskCode, Task>();
+	private final Map<String, Task> byShortName = new HashMap<String, Task>();
+//	private final List<GanttConstraint> constraints = new ArrayList<>();
+	private final HColorSet colorSet = HColorSet.instance();
+//
+//	private final OpenClose openClose = new OpenClose();
+//
+//	private final Map<String, Resource> resources = new LinkedHashMap<String, Resource>();
+//	private final Map<Day, HColor> colorDaysToday = new HashMap<Day, HColor>();
+//	private final Map<Day, HColor> colorDaysInternal = new HashMap<Day, HColor>();
+//	private final Map<DayOfWeek, HColor> colorDaysOfWeek = new HashMap<DayOfWeek, HColor>();
+//	private final Map<Day, String> nameDays = new HashMap<Day, String>();
+	private LabelStrategy labelStrategy = new LabelStrategy(LabelPosition.LEGACY, HorizontalAlignment.LEFT);
+//
+//	// Let's follow ISO-8601 rules
+//	private WeekNumberStrategy weekNumberStrategy = new WeekNumberStrategy(DayOfWeek.MONDAY, 4);
+//
+//	private PrintScale printScale = PrintScale.DAILY;
+//	private double factorScale = 1.0;
+	private Locale locale = Locale.ENGLISH;
+//
+//	private Day today;
+//	private double totalHeightWithoutFooter;
+	private Day min;
+	private Day max;
+	private TimeScaleChronology timeScale;
+//
+//	private Day printStart;
+//	private Day printEnd;
+//
+	private final RealOrigin origin = RealUtils.createOrigin();
+//
+//	private int defaultCompletion = 100;
+//
+//	private Task it;
+//	private Resource they;
+
+	public CommandExecutionResult changeLanguage(String lang) {
+		this.locale = new Locale(lang);
+		return CommandExecutionResult.ok();
+	}
+
+	public DiagramDescription getDescription() {
+		return new DiagramDescription("(Chronology)");
+	}
+
+//	public void setWeekNumberStrategy(DayOfWeek firstDayOfWeek, int minimalDaysInFirstWeek) {
+//		this.weekNumberStrategy = new WeekNumberStrategy(firstDayOfWeek, minimalDaysInFirstWeek);
+//	}
+
+	public ChronologyDiagram(UmlSource source) {
+		super(source, UmlDiagramType.CHRONOLOGY, null);
+	}
+
+//	public final int getDpi(FileFormatOption fileFormatOption) {
+//		return 96;
+//	}
+
+	@Override
+	protected ImageData exportDiagramNow(OutputStream os, int index, FileFormatOption fileFormatOption)
+			throws IOException {
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
+	}
+
+//	public void setPrintScale(PrintScale printScale) {
+//		this.printScale = printScale;
+//	}
+//
+//	public void setFactorScale(double factorScale) {
+//		this.factorScale = factorScale;
+//	}
+//
+//	private double getFactorScale() {
+//		return this.printScale.getDefaultScale() * this.factorScale;
+//	}
+//
+//	private boolean isHidden(Task task) {
+//		if (printStart == null || task instanceof TaskSeparator)
+//			return false;
+//
+//		if (task.getEnd().compareTo(min) < 0)
+//			return true;
+//
+//		if (task.getStart().compareTo(max) > 0)
+//			return true;
+//
+//		return false;
+//	}
+//
+//	@Override
+//	public String checkFinalError() {
+//		try {
+//			initMinMax();
+//		} catch (ImpossibleSolvingException ex) {
+//			return ex.getMessage();
+//		}
+//		return null;
+//	}
+
+	@Override
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
+		final StringBounder stringBounder = fileFormatOption.getDefaultStringBounder(getSkinParam());
+		initMinMax();
+
+		final TimeHeader timeHeader = new TimeHeaderChronology(stringBounder, thParam(), PrintScale.DAILY,
+				this.timeScale);
+		initTaskAndResourceDraws(timeHeader.getTimeScale(), timeHeader.getFullHeaderHeight(stringBounder),
+				stringBounder);
+
+		return new AbstractTextBlock() {
+			public XDimension2D calculateDimension(StringBounder stringBounder) {
+				return new XDimension2D(1000, 1000);
+			}
+
+			@Override
+			public void drawU(UGraphic ug) {
+				timeHeader.drawTimeHeader(ug, 200);
+				drawTasksRect(ug);
+				drawTasksTitle(ug, 0, 0);
+			}
+		};
+
+	}
+
+//
+//			private double getTitlesColumnWidth(StringBounder stringBounder) {
+//				if (labelStrategy.titleInside())
+//					return 0;
+//
+//				double width = 0;
+//				for (Task task : tasks.values()) {
+//					if (isHidden(task))
+//						continue;
+//
+//					width = Math.max(width, draws.get(task).getTitleWidth(stringBounder));
+//				}
+//				return width;
+//			}
+//
+//			public XDimension2D calculateDimension(StringBounder stringBounder) {
+//				return new XDimension2D(getTitlesColumnWidth(stringBounder) + getBarsColumnWidth(timeHeader),
+//						getTotalHeight(stringBounder, timeHeader));
+//			}
+//
+//			private double getBarsColumnWidth(final TimeHeader timeHeader) {
+//				final double xmin = timeHeader.getTimeScale().getStartingPosition(min);
+//				final double xmax = timeHeader.getTimeScale().getEndingPosition(max);
+//				return xmax - xmin;
+//			}
+//
+//		};
+//	}
+//
+//	private TimeHeader getTimeHeader(StringBounder stringBounder) {
+//		if (openClose.getStartingDay() == null)
+//			return new TimeHeaderSimple(stringBounder, thParam(), printScale);
+//		else if (printScale == PrintScale.DAILY)
+//			return new TimeHeaderDaily(stringBounder, thParam(), nameDays, printStart, printEnd);
+//		else if (printScale == PrintScale.WEEKLY)
+//			return new TimeHeaderWeekly(stringBounder, thParam(), weekNumberStrategy, withCalendarDate);
+//		else if (printScale == PrintScale.MONTHLY)
+//			return new TimeHeaderMonthly(stringBounder, thParam());
+//		else if (printScale == PrintScale.QUARTERLY)
+//			return new TimeHeaderQuarterly(stringBounder, thParam());
+//		else if (printScale == PrintScale.YEARLY)
+//			return new TimeHeaderYearly(stringBounder, thParam());
+//		else
+//			throw new IllegalStateException();
+//
+//	}
+
+	private TimeHeaderParameters thParam() {
+		return new TimeHeaderParameters(null, 1, min, max, getIHtmlColorSet(), locale, null, null, null, this);
+	}
+
+//	private Map<Day, HColor> colorDays() {
+//		colorDaysInternal.putAll(colorDaysToday);
+//		return Collections.unmodifiableMap(colorDaysInternal);
+//	}
+
+	@Override
+	public final Style getStyle(SName param) {
+		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, param)
+				.getMergedStyle(getCurrentStyleBuilder());
+	}
+
+	@Override
+	public final Style getStyle(SName param1, SName param2) {
+		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, param1, param2)
+				.getMergedStyle(getCurrentStyleBuilder());
+	}
+
+//	private double getTotalHeight(StringBounder stringBounder, TimeHeader timeHeader) {
+//		if (showFootbox)
+//			return totalHeightWithoutFooter + timeHeader.getTimeFooterHeight(stringBounder);
+//
+//		return totalHeightWithoutFooter;
+//	}
+
+	private void drawTasksRect(UGraphic ug) {
+		for (Task task : tasks.values()) {
+//			if (isHidden(task))
+//				continue;
+
+			final TaskDraw draw = draws.get(task);
+			final UTranslate move = UTranslate.dy(draw.getY(ug.getStringBounder()).getCurrentValue());
+			draw.drawU(ug.apply(move));
+		}
+	}
+
+//	private void drawConstraints(final UGraphic ug, TimeScale timeScale) {
+//		for (GanttConstraint constraint : constraints) {
+//			if (printStart != null && constraint.isHidden(min, max))
+//				continue;
+//
+//			constraint.getUDrawable(timeScale, this).drawU(ug);
+//		}
+//
+//	}
+//
+//	public StyleSignatureBasic getDefaultStyleDefinitionArrow() {
+//		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, SName.arrow);
+//	}
+
+	private void drawTasksTitle(UGraphic ug, double colTitles, double colBars) {
+		for (Task task : tasks.values()) {
+//			if (isHidden(task))
+//				continue;
+
+			final TaskDraw draw = draws.get(task);
+			final UTranslate move = UTranslate.dy(draw.getY(ug.getStringBounder()).getCurrentValue());
+			draw.drawTitle(ug.apply(move), labelStrategy, colTitles, colBars);
+		}
+	}
+
+//	private void drawResources(UGraphic ug) {
+//		for (Resource res : resources.values()) {
+//			final ResourceDraw draw = res.getResourceDraw();
+//			final UTranslate move = UTranslate.dy(draw.getY());
+//			draw.drawU(ug.apply(move));
+//		}
+//	}
+//
+//	public void closeDayOfWeek(DayOfWeek day, String task) {
+//		openClose.close(day);
+//	}
+//
+//	public void openDayOfWeek(DayOfWeek day, String task) {
+//		if (task.length() == 0)
+//			openClose.open(day);
+//		else
+//			getOpenCloseForTask(task).open(day);
+//	}
+//
+//	public void closeDayAsDate(Day day, String task) {
+//		if (task.length() == 0)
+//			openClose.close(day);
+//		else
+//			getOpenCloseForTask(task).close(day);
+//
+//	}
+//
+//	public void openDayAsDate(Day day, String task) {
+//		if (task.length() == 0)
+//			openClose.open(day);
+//		else
+//			getOpenCloseForTask(task).open(day);
+//
+//	}
+//
+//	private OpenClose getOpenCloseForTask(String task) {
+//		OpenClose except = openCloseForTask.get(task);
+//		if (except == null) {
+//			except = new OpenClose();
+//			openCloseForTask.put(task, except);
+//		}
+//		return except;
+//	}
+//
+//	private final Map<String, OpenClose> openCloseForTask = new HashMap<>();
+//
+	private void initTaskAndResourceDraws(TimeScale timeScale, double headerHeight, StringBounder stringBounder) {
+		Real y = origin;
+		y = y.addFixed(headerHeight);
+		for (Task task : tasks.values()) {
+			final TaskDraw draw;
+			final String disp = task.getCode().getSimpleDisplay();
+			draw = new TaskDrawDiamond(timeScale, y, disp, task.getStart(), task, this, task.getStyleBuilder());
+			final double height = draw.getFullHeightTask(stringBounder);
+			y = y.addAtLeast(height);
+//			if (task instanceof TaskSeparator) {
+//				final TaskSeparator taskSeparator = (TaskSeparator) task;
+//				draw = new TaskDrawSeparator(taskSeparator.getName(), timeScale, y, min, max, task.getStyleBuilder(),
+//						getSkinParam().getIHtmlColorSet());
+//			} else if (task instanceof TaskGroup) {
+//				final TaskGroup taskGroup = (TaskGroup) task;
+//				draw = new TaskDrawGroup(timeScale, y, taskGroup.getCode().getSimpleDisplay(), getStart(taskGroup),
+//						getEnd(taskGroup), task, this, task.getStyleBuilder());
+//			} else {
+//				final TaskImpl tmp = (TaskImpl) task;
+//				final String disp = hideResourceName ? tmp.getCode().getSimpleDisplay() : tmp.getPrettyDisplay();
+//				if (tmp.isDiamond()) {
+//					draw = new TaskDrawDiamond(timeScale, y, disp, getStart(tmp), task, this, task.getStyleBuilder());
+//				} else {
+//					final boolean oddStart = printStart != null && min.compareTo(getStart(tmp)) == 0;
+//					final boolean oddEnd = printStart != null && max.compareTo(getEnd(tmp)) == 0;
+//					draw = new TaskDrawRegular(timeScale, y, disp, getStart(tmp), getEnd(tmp), oddStart, oddEnd,
+//							getSkinParam(), task, this, getConstraints(task), task.getStyleBuilder());
+//				}
+//				draw.setColorsAndCompletion(tmp.getColors(), tmp.getCompletion(), tmp.getUrl(), tmp.getNote());
+//			}
+//			if (task.getRow() == null)
+//				y = y.addAtLeast(draw.getFullHeightTask(stringBounder));
+//
+			draws.put(task, draw);
+		}
+//		origin.compileNow();
+//		magicPush(stringBounder);
+//		double yy = lastY(stringBounder);
+//		if (yy == 0) {
+//			yy = headerHeight;
+//		} else if (this.hideResourceFoobox == false)
+//			for (Resource res : resources.values()) {
+//				final ResourceDraw draw = buildResourceDraw(this, res, timeScale, yy, min, max);
+//				res.setTaskDraw(draw);
+//				yy += draw.getHeight(stringBounder);
+//			}
+//
+//		this.totalHeightWithoutFooter = yy;
+	}
+
+//
+//	private ResourceDraw buildResourceDraw(ChronologyDiagram gantt, Resource res, TimeScale timeScale, double y, Day min,
+//			Day max) {
+//		return new ResourceDrawBasic(gantt, res, timeScale, y, min, max);
+//		// return new ResourceDrawVersion2(gantt, res, timeScale, y, min, max);
+//	}
+//
+//	private Collection<GanttConstraint> getConstraints(Task task) {
+//		final List<GanttConstraint> result = new ArrayList<>();
+//		for (GanttConstraint constraint : constraints) {
+//			if (constraint.isOn(task))
+//				result.add(constraint);
+//
+//		}
+//		return Collections.unmodifiableCollection(result);
+//	}
+//
+//	private double lastY(StringBounder stringBounder) {
+//		double result = 0;
+//		for (TaskDraw td : draws.values())
+//			result = Math.max(result, td.getY(stringBounder).getCurrentValue() + td.getHeightMax(stringBounder));
+//
+//		return result;
+//	}
+//
+//	private void magicPush(StringBounder stringBounder) {
+//		final List<TaskDraw> notes = new ArrayList<>();
+//		for (TaskDraw td : draws.values()) {
+//			final FingerPrint taskPrint = td.getFingerPrint(stringBounder);
+//			final FingerPrint fingerPrintNote = td.getFingerPrintNote(stringBounder);
+//
+//			if (td.getTrueRow() == null)
+//				for (TaskDraw note : notes) {
+//					final FingerPrint otherNote = note.getFingerPrintNote(stringBounder);
+//					final double deltaY = otherNote.overlap(taskPrint);
+//					if (deltaY > 0) {
+//						final Real bottom = note.getY(stringBounder).addAtLeast(note.getHeightMax(stringBounder));
+//						td.getY(stringBounder).ensureBiggerThan(bottom);
+//						origin.compileNow();
+//					}
+//
+//				}
+//
+//			if (fingerPrintNote != null)
+//				notes.add(td);
+//
+//		}
+//	}
+//
+//	private Day getStart(final Task tmp) {
+//		if (printStart == null)
+//			return tmp.getStart();
+//
+//		return Day.max(min, tmp.getStart());
+//	}
+//
+//	private Day getEnd(final Task tmp) {
+//		if (printStart == null)
+//			return tmp.getEnd();
+//
+//		return Day.min(max, tmp.getEnd());
+//	}
+//
+	private void initMinMax() {
+		if (tasks.size() == 0) {
+			throw new IllegalStateException();
+		}
+		for (Task task : tasks.values()) {
+			if (this.min == null || this.max == null) {
+				this.min = task.getStart();
+				this.max = task.getEnd();
+				continue;
+
+			}
+			if (this.min.compareTo(task.getStart()) > 0)
+				this.min = task.getStart();
+			if (this.max.compareTo(task.getEnd()) < 0)
+				this.max = task.getEnd();
+		}
+
+		this.min = this.min.roundDayDown();
+		this.max = this.max.roundDayUp();
+
+		this.timeScale = new TimeScaleChronology(1000);
+		this.timeScale.setMin(this.min.getMillis());
+		this.timeScale.setMax(this.max.getMillis());
+	}
+
+//	public Day getThenDate() {
+//		Day result = getStartingDate();
+//		for (Day d : colorDays().keySet())
+//			if (d.compareTo(result) > 0)
+//				result = d;
+//
+//		for (Day d : nameDays.keySet())
+//			if (d.compareTo(result) > 0)
+//				result = d;
+//
+//		return result;
+//	}
+//
+//	public Task getExistingTask(String id) {
+//		final Task result = byShortName.get(Objects.requireNonNull(id));
+//		if (result != null)
+//			return result;
+//
+//		final TaskCode code = new TaskCode(id);
+//		return tasks.get(code);
+//	}
+//
+//	public GanttConstraint forceTaskOrder(Task task1, Task task2) {
+//		final TaskInstant end1 = new TaskInstant(task1, TaskAttribute.END);
+//		task2.setStart(end1.getInstantPrecise());
+//		final GanttConstraint result = new GanttConstraint(this.getIHtmlColorSet(),
+//				getSkinParam().getCurrentStyleBuilder(), end1, new TaskInstant(task2, TaskAttribute.START));
+//		addContraint(result);
+//		return result;
+//	}
+
+	public Task getOrCreateTask(String codeOrShortName, String shortName, boolean linkedToPrevious) {
+		Objects.requireNonNull(codeOrShortName);
+		Task result = shortName == null ? null : byShortName.get(shortName);
+		if (result != null)
+			return result;
+
+		result = byShortName.get(codeOrShortName);
+		if (result != null)
+			return result;
+
+		final TaskCode code = new TaskCode(codeOrShortName);
+		result = tasks.get(code);
+		if (result == null) {
+
+			result = new TaskChronology(getSkinParam().getCurrentStyleBuilder(), code);
+			if (currentGroup != null)
+				currentGroup.addTask(result);
+
+			tasks.put(code, result);
+			if (byShortName != null)
+				byShortName.put(shortName, result);
+
+		}
+		return result;
+	}
+
+//	private Task getLastCreatedTask() {
+//		final List<Task> all = new ArrayList<>(tasks.values());
+//		for (int i = all.size() - 1; i >= 0; i--)
+//			if (all.get(i) instanceof TaskImpl)
+//				return all.get(i);
+//
+//		return null;
+//	}
+//
+//	public void addSeparator(String comment) {
+//		TaskSeparator separator = new TaskSeparator(getSkinParam().getCurrentStyleBuilder(), comment, tasks.size());
+//		tasks.put(separator.getCode(), separator);
+//	}
+//
+	private TaskGroup currentGroup = null;
+//
+//	public CommandExecutionResult addGroup(String name) {
+//		TaskGroup group = new TaskGroup(this.currentGroup, getSkinParam().getCurrentStyleBuilder(), name);
+//
+//		if (this.currentGroup != null)
+//			this.currentGroup.addTask(group);
+//
+//		this.currentGroup = group;
+//		tasks.put(group.getCode(), group);
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	public CommandExecutionResult endGroup() {
+//		if (this.currentGroup == null)
+//			return CommandExecutionResult.error("No group to be closed");
+//
+//		this.currentGroup = this.currentGroup.getParent();
+//
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	public void addContraint(GanttConstraint constraint) {
+//		constraints.add(constraint);
+//	}
+//
+//	public HColorSet getIHtmlColorSet() {
+//		return colorSet;
+//	}
+//
+//	public void setProjectStartingDate(Day start) {
+//		openClose.setStartingDay(start);
+//		this.min = start;
+//	}
+//
+//	public Day getStartingDate() {
+//		if (openClose.getStartingDay() == null)
+//			return min;
+//
+//		return openClose.getStartingDay();
+//	}
+//
+//	public Day getEndingDate() {
+//		initMinMax();
+//		return max;
+//	}
+//
+//	public int daysInWeek() {
+//		return openClose.daysInWeek();
+//	}
+//
+//	public boolean isOpen(Day day) {
+//		return openClose.getLoadAt(day) > 0;
+//	}
+//
+//	public boolean affectResource(Task result, String description) {
+//		final Pattern p = Pattern.compile("([^:]+)(:(\\d+))?");
+//		final Matcher m = p.matcher(description);
+//		if (m.find() == false)
+//			throw new IllegalArgumentException();
+//
+//		final Resource resource = getResource(m.group(1));
+//		int percentage = 100;
+//		if (m.group(3) != null)
+//			percentage = Integer.parseInt(m.group(3));
+//
+//		if (percentage == 0)
+//			return false;
+//
+//		result.addResource(resource, percentage);
+//		return true;
+//	}
+//
+//	public Resource getResource(String resourceName) {
+//		Resource resource = resources.get(resourceName);
+//		if (resource == null)
+//			resource = new Resource(resourceName);
+//
+//		resources.put(resourceName, resource);
+//		return resource;
+//	}
+//
+//	public int getLoadForResource(Resource res, Day i) {
+//		int result = 0;
+//		for (Task task : tasks.values()) {
+//			if (task instanceof TaskSeparator)
+//				continue;
+//
+//			final TaskImpl task2 = (TaskImpl) task;
+//			result += task2.loadForResource(res, i);
+//		}
+//		return result;
+//	}
+//
+//	public Moment getExistingMoment(String id) {
+//		Moment result = getExistingTask(id);
+//		if (result == null) {
+//			Day start = null;
+//			Day end = null;
+//			for (Map.Entry<Day, String> ent : nameDays.entrySet()) {
+//				if (ent.getValue().equalsIgnoreCase(id) == false)
+//					continue;
+//
+//				start = min(start, ent.getKey());
+//				end = max(end, ent.getKey());
+//			}
+//			if (start != null)
+//				result = new MomentImpl(start, end);
+//
+//		}
+//		return result;
+//	}
+//
+//	private Day min(Day d1, Day d2) {
+//		if (d1 == null)
+//			return d2;
+//
+//		if (d1.compareTo(d2) > 0)
+//			return d2;
+//
+//		return d1;
+//	}
+//
+//	private Day max(Day d1, Day d2) {
+//		if (d1 == null)
+//			return d2;
+//
+//		if (d1.compareTo(d2) < 0)
+//			return d2;
+//
+//		return d1;
+//	}
+//
+//	public void colorDay(Day day, HColor color) {
+//		colorDaysInternal.put(day, color);
+//	}
+//
+//	public void colorDay(DayOfWeek day, HColor color) {
+//		colorDaysOfWeek.put(day, color);
+//	}
+//
+//	public void nameDay(Day day, String name) {
+//		nameDays.put(day, name);
+//	}
+//
+//	public Day getToday() {
+//		if (today == null)
+//			this.today = Day.today();
+//
+//		return today;
+//	}
+//
+//	public void setTodayColors(CenterBorderColor colors) {
+//		if (today == null)
+//			this.today = Day.today();
+//
+//		colorDaysToday.put(today, colors.getCenter());
+//	}
+//
+//	public CommandExecutionResult setToday(Day date) {
+//		this.today = date;
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	public CommandExecutionResult deleteTask(Task task) {
+//		task.setColors(new CenterBorderColor(HColors.WHITE, HColors.BLACK));
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	public void setPrintInterval(Day start, Day end) {
+//		this.printStart = start;
+//		this.printEnd = end;
+//	}
+//
+//	public TaskDraw getTaskDraw(Task task) {
+//		return draws.get(task);
+//	}
+//
+//	public CommandExecutionResult addNote(Display note) {
+//		Task last = null;
+//		for (Task current : tasks.values())
+//			last = current;
+//		if (last == null)
+//			return CommandExecutionResult.error("No task defined");
+//
+//		last.setNote(note);
+//		return CommandExecutionResult.ok();
+//	}
+
+	public LoadPlanable getDefaultPlan() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public TaskDraw getTaskDraw(Task task) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public HColorSet getIHtmlColorSet() {
+		return colorSet;
+	}
+
+//	private boolean showFootbox = true;
+//
+//	public void setShowFootbox(boolean footbox) {
+//		this.showFootbox = footbox;
+//
+//	}
+//
+//	@Override
+//	public ClockwiseTopRightBottomLeft getDefaultMargins() {
+//		return ClockwiseTopRightBottomLeft.none();
+//	}
+//
+//	public void setLabelStrategy(LabelStrategy strategy) {
+//		this.labelStrategy = strategy;
+//	}
+//
+//	private boolean withCalendarDate;
+//
+//	public void setWithCalendarDate(boolean withCalendarDate) {
+//		this.withCalendarDate = withCalendarDate;
+//	}
+//
+//	private boolean hideResourceName;
+//	private boolean hideResourceFoobox;
+//
+//	public CommandExecutionResult hideResourceName() {
+//		this.hideResourceName = true;
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	public CommandExecutionResult hideResourceFootbox() {
+//		this.hideResourceFoobox = true;
+//		return CommandExecutionResult.ok();
+//	}
+//
+//	private final Set<Day> verticalSeparatorBefore = new HashSet<>();
+//
+//	public void addVerticalSeparatorBefore(Day day) {
+//		verticalSeparatorBefore.add(day);
+//	}
+//
+//	public void setTaskDefaultCompletion(int defaultCompletion) {
+//		this.defaultCompletion = defaultCompletion;
+//	}
+//
+//	public List<TaskDrawRegular> getAllTasksForResource(Resource res) {
+//		final List<TaskDrawRegular> result = new ArrayList<TaskDrawRegular>();
+//		for (Task task : tasks.values())
+//			if (task.isAssignedTo(res)) {
+//				final TaskDrawRegular draw = (TaskDrawRegular) draws.get(task);
+//				result.add(draw);
+//			}
+//
+//		return Collections.unmodifiableList(result);
+//	}
+//
+//	public void setIt(Task result) {
+//		this.it = result;
+//	}
+//
+//	public Task getIt() {
+//		return it;
+//	}
+//
+//	public final Resource getThey() {
+//		return they;
+//	}
+//
+//	public final void setThey(Resource they) {
+//		this.they = they;
+//	}
+
+}

src/net/sourceforge/plantuml/chronology/ChronologyDiagramFactory.java

@@ -0,0 +1,126 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+import net.sourceforge.plantuml.command.Command;
+import net.sourceforge.plantuml.command.CommonCommands;
+import net.sourceforge.plantuml.command.PSystemCommandFactory;
+import net.sourceforge.plantuml.core.DiagramType;
+import net.sourceforge.plantuml.core.UmlSource;
+import net.sourceforge.plantuml.project.command.NaturalCommand;
+import net.sourceforge.plantuml.project.lang.SentenceAnd;
+import net.sourceforge.plantuml.project.lang.SentenceAndAnd;
+import net.sourceforge.plantuml.project.lang.SentenceSimple;
+import net.sourceforge.plantuml.project.lang.Subject;
+
+public class ChronologyDiagramFactory extends PSystemCommandFactory {
+
+	static private final List<Subject<ChronologyDiagram>> subjects() {
+		return Arrays.asList(SubjectTask.ME);
+	}
+
+	public ChronologyDiagramFactory() {
+		super(DiagramType.CHRONOLOGY);
+	}
+
+	@Override
+	protected void initCommandsList(List<Command> cmds) {
+		CommonCommands.addTitleCommands(cmds);
+		CommonCommands.addCommonCommands2(cmds);
+
+//		cmds.add(CommandStyleMultilinesCSS.ME);
+//		cmds.add(CommandStyleImport.ME);
+//
+//		cmds.add(CommandNope.ME);
+
+		addLanguageCommands(cmds);
+
+//		cmds.add(new CommandGanttArrow());
+//		cmds.add(new CommandGanttArrow2());
+//		cmds.add(new CommandColorTask());
+//		cmds.add(new CommandSeparator());
+//		cmds.add(new CommandWeekNumberStrategy());
+//		cmds.add(new CommandGroupStart());
+//		cmds.add(new CommandGroupEnd());
+//
+//		cmds.add(new CommandLanguage());
+//		cmds.add(new CommandPrintScale());
+//		cmds.add(new CommandPrintBetween());
+//		cmds.add(new CommandNoteBottom());
+//		cmds.add(new CommandFootbox());
+//		cmds.add(new CommandLabelOnColumn());
+//		cmds.add(new CommandHideResourceName());
+//		cmds.add(new CommandHideResourceFootbox());
+//		cmds.add(new CommandTaskCompleteDefault());
+	}
+
+	private void addLanguageCommands(List<Command> cmd) {
+		for (Subject<ChronologyDiagram> subject : subjects())
+			for (SentenceSimple<ChronologyDiagram> sentenceA : subject.getSentences()) {
+				cmd.add(NaturalCommand.create(sentenceA));
+				for (SentenceSimple<ChronologyDiagram> sentenceB : subject.getSentences()) {
+					final String signatureA = sentenceA.getSignature();
+					final String signatureB = sentenceB.getSignature();
+					if (signatureA.equals(signatureB) == false)
+						cmd.add(NaturalCommand.create(new SentenceAnd<ChronologyDiagram>(sentenceA, sentenceB)));
+
+				}
+			}
+
+		for (Subject<ChronologyDiagram> subject : subjects())
+			for (SentenceSimple<ChronologyDiagram> sentenceA : subject.getSentences())
+				for (SentenceSimple<ChronologyDiagram> sentenceB : subject.getSentences())
+					for (SentenceSimple<ChronologyDiagram> sentenceC : subject.getSentences()) {
+						final String signatureA = sentenceA.getSignature();
+						final String signatureB = sentenceB.getSignature();
+						final String signatureC = sentenceC.getSignature();
+						if (signatureA.equals(signatureB) == false && signatureA.equals(signatureC) == false
+								&& signatureC.equals(signatureB) == false)
+							cmd.add(NaturalCommand
+									.create(new SentenceAndAnd<ChronologyDiagram>(sentenceA, sentenceB, sentenceC)));
+					}
+	}
+
+	@Override
+	public ChronologyDiagram createEmptyDiagram(UmlSource source, Map<String, String> skinParam) {
+		return new ChronologyDiagram(source);
+	}
+
+}

src/net/sourceforge/plantuml/chronology/ComplementAnything.java

@@ -0,0 +1,54 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.project.Failable;
+import net.sourceforge.plantuml.project.lang.Something;
+import net.sourceforge.plantuml.regex.IRegex;
+import net.sourceforge.plantuml.regex.RegexLeaf;
+import net.sourceforge.plantuml.regex.RegexResult;
+
+public class ComplementAnything implements Something<ChronologyDiagram> {
+
+	public IRegex toRegex(String suffix) {
+		return new RegexLeaf("ANYTHING" + suffix, "(.*?)");
+	}
+
+	public Failable<String> getMe(ChronologyDiagram system, RegexResult arg, String suffix) {
+		final String value = arg.get("ANYTHING" + suffix, 0);
+		return Failable.ok(value);
+	}
+}

src/net/sourceforge/plantuml/chronology/ComplementHour.java

@@ -0,0 +1,84 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.TimeZone;
+
+import net.sourceforge.plantuml.project.Failable;
+import net.sourceforge.plantuml.project.lang.Something;
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.regex.IRegex;
+import net.sourceforge.plantuml.regex.RegexConcat;
+import net.sourceforge.plantuml.regex.RegexLeaf;
+import net.sourceforge.plantuml.regex.RegexOptional;
+import net.sourceforge.plantuml.regex.RegexResult;
+
+public class ComplementHour implements Something<ChronologyDiagram> {
+
+	// [Task1] starts at 2023-11-28 15:41:21, ends at 2023-11-28 19:40:00
+
+	static private final SimpleDateFormat inputFormat;
+	static private final SimpleDateFormat inputFormat2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
+
+	static {
+		inputFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		inputFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
+
+	}
+
+	public IRegex toRegex(String suffix) {
+		return new RegexConcat( //
+				new RegexLeaf("TIME", "(\\d+-\\d+-\\d+ \\d+:\\d+:\\d+)"), //
+				new RegexOptional(new RegexLeaf("MS", "\\.(\\d+)")) //
+		); //
+	}
+
+	public Failable<Day> getMe(ChronologyDiagram system, RegexResult arg, String suffix) {
+		final String value = arg.get("TIME", 0);
+		System.err.println("value=" + value);
+		try {
+			final Date date = inputFormat.parse(value);
+			return Failable.ok(Day.create(date.getTime()));
+		} catch (ParseException e) {
+			e.printStackTrace();
+		}
+		throw new IllegalStateException();
+	}
+
+}

src/net/sourceforge/plantuml/chronology/HourPattern.java

@@ -0,0 +1,136 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.project.time.Month;
+import net.sourceforge.plantuml.regex.IRegex;
+import net.sourceforge.plantuml.regex.RegexConcat;
+import net.sourceforge.plantuml.regex.RegexLeaf;
+import net.sourceforge.plantuml.regex.RegexOr;
+import net.sourceforge.plantuml.regex.RegexResult;
+
+public class HourPattern {
+
+	private final String id;
+	private final String yearKeyA;
+	private final String yearKeyB;
+	private final String yearKeyC;
+	private final String monthKeyA;
+	private final String monthKeyB;
+	private final String monthKeyC;
+	private final String dayKeyA;
+	private final String dayKeyB;
+	private final String dayKeyC;
+
+	public HourPattern(String id) {
+		this.id = id;
+		this.yearKeyA = "AYEAR" + id;
+		this.yearKeyB = "BYEAR" + id;
+		this.yearKeyC = "CYEAR" + id;
+		this.monthKeyA = "AMONTH" + id;
+		this.monthKeyB = "BMONTH" + id;
+		this.monthKeyC = "CMONTH" + id;
+		this.dayKeyA = "ADAY" + id;
+		this.dayKeyB = "BDAY" + id;
+		this.dayKeyC = "CDAY" + id;
+	}
+
+	public IRegex toRegex() {
+		return new RegexOr(toRegexA_DD_MONTH_YYYY(), toRegexB_YYYY_MM_DD(), toRegexC_MONTH_DD_YYYY());
+	}
+
+	public Day getDay(RegexResult arg) {
+		if (arg.get(dayKeyA, 0) != null)
+			return resultA(arg);
+
+		if (arg.get(dayKeyB, 0) != null)
+			return resultB(arg);
+
+		if (arg.get(dayKeyC, 0) != null)
+			return resultC(arg);
+		return null;
+	}
+
+	private IRegex toRegexA_DD_MONTH_YYYY() {
+		return new RegexConcat( //
+				new RegexLeaf(dayKeyA, "([\\d]{1,2})"), //
+				new RegexLeaf("[\\w, ]*?"), //
+				new RegexLeaf(monthKeyA, "(" + Month.getRegexString() + ")"), //
+				new RegexLeaf("[\\w, ]*?"), //
+				new RegexLeaf(yearKeyA, "([\\d]{1,4})"));
+	}
+
+	private Day resultA(RegexResult arg) {
+		final int day = Integer.parseInt(arg.get(dayKeyA, 0));
+		final String month = arg.get(monthKeyA, 0);
+		final int year = Integer.parseInt(arg.get(yearKeyA, 0));
+		return Day.create(year, month, day);
+	}
+
+	private IRegex toRegexB_YYYY_MM_DD() {
+		return new RegexConcat( //
+				new RegexLeaf(yearKeyB, "([\\d]{1,4})"), //
+				new RegexLeaf("\\D"), //
+				new RegexLeaf(monthKeyB, "([\\d]{1,2})"), //
+				new RegexLeaf("\\D"), //
+				new RegexLeaf(dayKeyB, "([\\d]{1,2})"));
+	}
+
+	private Day resultB(RegexResult arg) {
+		final int day = Integer.parseInt(arg.get(dayKeyB, 0));
+		final int month = Integer.parseInt(arg.get(monthKeyB, 0));
+		final int year = Integer.parseInt(arg.get(yearKeyB, 0));
+		return Day.create(year, month, day);
+	}
+
+	private IRegex toRegexC_MONTH_DD_YYYY() {
+		return new RegexConcat( //
+				new RegexLeaf(monthKeyC, "(" + Month.getRegexString() + ")"), //
+				new RegexLeaf("[\\w, ]*?"), //
+				new RegexLeaf(dayKeyC, "([\\d]{1,2})"), //
+				new RegexLeaf("[\\w, ]*?"), //
+				new RegexLeaf(yearKeyC, "([\\d]{1,4})"));
+	}
+
+	private Day resultC(RegexResult arg) {
+		final int day = Integer.parseInt(arg.get(dayKeyC, 0));
+		final String month = arg.get(monthKeyC, 0);
+		final int year = Integer.parseInt(arg.get(yearKeyC, 0));
+		return Day.create(year, month, day);
+	}
+
+}

src/net/sourceforge/plantuml/chronology/SentenceHappensChronology.java

@@ -0,0 +1,60 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.command.CommandExecutionResult;
+import net.sourceforge.plantuml.project.core.Task;
+import net.sourceforge.plantuml.project.lang.SentenceSimple;
+import net.sourceforge.plantuml.project.lang.Verbs;
+import net.sourceforge.plantuml.project.lang.Words;
+import net.sourceforge.plantuml.project.time.Day;
+
+public class SentenceHappensChronology extends SentenceSimple<ChronologyDiagram> {
+
+	public SentenceHappensChronology() {
+		super(SubjectTask.ME, Verbs.happens, Words.zeroOrMore(Words.THE, Words.ON, Words.AT), new ComplementHour());
+	}
+
+	@Override
+	public CommandExecutionResult execute(ChronologyDiagram project, Object subject, Object complement) {
+		final Task task = (Task) subject;
+		final Day start = (Day) complement;
+		task.setStart(start);
+		task.setEnd(start);
+		return CommandExecutionResult.ok();
+	}
+
+}

src/net/sourceforge/plantuml/chronology/SubjectTask.java

@@ -0,0 +1,92 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import net.sourceforge.plantuml.project.Failable;
+import net.sourceforge.plantuml.project.core.Task;
+import net.sourceforge.plantuml.project.lang.SentenceSimple;
+import net.sourceforge.plantuml.project.lang.Subject;
+import net.sourceforge.plantuml.project.lang.Words;
+import net.sourceforge.plantuml.regex.IRegex;
+import net.sourceforge.plantuml.regex.RegexConcat;
+import net.sourceforge.plantuml.regex.RegexLeaf;
+import net.sourceforge.plantuml.regex.RegexOptional;
+import net.sourceforge.plantuml.regex.RegexOr;
+import net.sourceforge.plantuml.regex.RegexResult;
+import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
+
+public class SubjectTask implements Subject<ChronologyDiagram> {
+
+	public static final Subject<ChronologyDiagram> ME = new SubjectTask();
+
+	private SubjectTask() {
+	}
+
+	public Failable<Task> getMe(ChronologyDiagram chronology, RegexResult arg) {
+		final Task result;
+
+		final String subject = arg.get("SUBJECT", 0);
+		final String shortName = arg.get("SHORTNAME", 0);
+		final String stereotype = arg.get("STEREOTYPE", 0);
+
+		result = chronology.getOrCreateTask(subject, shortName, false);
+
+		if (stereotype != null)
+			result.setStereotype(Stereotype.build(arg.get("STEREOTYPE", 0)));
+
+		return Failable.ok(result);
+	}
+
+	public Collection<? extends SentenceSimple<ChronologyDiagram>> getSentences() {
+		return Arrays.asList(new SentenceHappensChronology());
+	}
+
+	public IRegex toRegex() {
+		return new RegexOr( //
+				new RegexLeaf("SUBJECT", "\\[([^\\[\\]]+?)\\]"), //
+				StereotypePattern.optional("STEREOTYPE"), //
+				new RegexOptional(new RegexConcat(//
+						Words.exactly(Words.AS), //
+						RegexLeaf.spaceOneOrMore(), //
+						new RegexLeaf("SHORTNAME", "\\[([^\\[\\]]+?)\\]"))) //
+		);
+	}
+
+}

src/net/sourceforge/plantuml/chronology/TaskChronology.java

@@ -0,0 +1,372 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.klimt.creole.Display;
+import net.sourceforge.plantuml.project.Load;
+import net.sourceforge.plantuml.project.core.AbstractTask;
+import net.sourceforge.plantuml.project.core.Resource;
+import net.sourceforge.plantuml.project.core.Task;
+import net.sourceforge.plantuml.project.core.TaskCode;
+import net.sourceforge.plantuml.project.lang.CenterBorderColor;
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.project.time.DayOfWeek;
+import net.sourceforge.plantuml.style.StyleBuilder;
+import net.sourceforge.plantuml.url.Url;
+
+public class TaskChronology extends AbstractTask implements Task {
+
+	private Display note;
+
+	private Url url;
+	private CenterBorderColor[] colors;
+
+	private Day start;
+	private Day end;
+
+	public void setUrl(Url url) {
+		this.url = url;
+	}
+
+	public TaskChronology(StyleBuilder styleBuilder, TaskCode code) {
+		super(styleBuilder, code);
+	}
+
+	@Override
+	public void setStart(Day start) {
+		this.start = start;
+
+	}
+
+	@Override
+	public Day getStart() {
+		return this.start;
+	}
+
+	@Override
+	public void setEnd(Day end) {
+		this.end = end;
+	}
+
+	@Override
+	public Day getEnd() {
+		return this.end;
+	}
+
+	@Override
+	public Load getLoad() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void setLoad(Load load) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void addResource(Resource resource, int percentage) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void setDiamond(boolean diamond) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean isDiamond() {
+		return false;
+	}
+
+	@Override
+	public void setCompletion(int completion) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void addPause(Day pause) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void addPause(DayOfWeek pause) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean isAssignedTo(Resource res) {
+		throw new UnsupportedOperationException();
+	}
+
+//	@Override
+//	public int getLoadAt(Day instant) {
+//		if (isPaused(instant))
+//			return 0;
+//
+//		LoadPlanable result = defaultPlan;
+//		if (resources.size() > 0)
+//			result = PlanUtils.multiply(defaultPlan, getResourcePlan());
+//
+//		return result.getLoadAt(instant);
+//	}
+//
+//	private boolean isPaused(Day instant) {
+//		if (pausedDay.contains(instant))
+//			return true;
+//
+//		if (pausedDayOfWeek(instant))
+//			return true;
+//
+//		return false;
+//	}
+//
+//	private boolean pausedDayOfWeek(Day instant) {
+//		for (DayOfWeek dayOfWeek : pausedDayOfWeek)
+//			if (instant.getDayOfWeek() == dayOfWeek)
+//				return true;
+//
+//		return false;
+//	}
+//
+//	public int loadForResource(Resource res, Day instant) {
+//		if (resources.keySet().contains(res) && instant.compareTo(getStart()) >= 0
+//				&& instant.compareTo(getEnd()) <= 0) {
+//			if (isPaused(instant))
+//				return 0;
+//
+//			if (res.isClosedAt(instant))
+//				return 0;
+//
+//			return resources.get(res);
+//		}
+//		return 0;
+//	}
+//
+//	@Override
+//	public void addPause(Day pause) {
+//		this.pausedDay.add(pause);
+//	}
+//
+//	@Override
+//	public void addPause(DayOfWeek pause) {
+//		this.pausedDayOfWeek.add(pause);
+//	}
+//
+//	private LoadPlanable getResourcePlan() {
+//		if (resources.size() == 0)
+//			throw new IllegalStateException();
+//
+//		return new LoadPlanable() {
+//			public int getLoadAt(Day instant) {
+//				int result = 0;
+//				for (Map.Entry<Resource, Integer> ent : resources.entrySet()) {
+//					final Resource res = ent.getKey();
+//					if (res.isClosedAt(instant))
+//						continue;
+//
+//					final int percentage = ent.getValue();
+//					result += percentage;
+//				}
+//				return result;
+//			}
+//
+//			@Override
+//			public Day getLastDayIfAny() {
+//				return TaskChronology.this.getLastDayIfAny();
+//			}
+//		};
+//	}
+//
+//	@Override
+//	public Day getLastDayIfAny() {
+//		Day result = null;
+//
+//		for (Resource res : resources.keySet()) {
+//			if (res.getLastDayIfAny() == null)
+//				return null;
+//
+//			if (result == null || result.compareTo(res.getLastDayIfAny()) < 0)
+//				result = res.getLastDayIfAny();
+//		}
+//
+//		return result;
+//	}
+//
+//	public String getPrettyDisplay() {
+//		if (resources.size() > 0) {
+//			final StringBuilder result = new StringBuilder(getCode().getSimpleDisplay());
+//			result.append(" ");
+//			for (Iterator<Map.Entry<Resource, Integer>> it = resources.entrySet().iterator(); it.hasNext();) {
+//				final Map.Entry<Resource, Integer> ent = it.next();
+//				result.append("{");
+//				result.append(ent.getKey().getName());
+//				final int percentage = ent.getValue();
+//				if (percentage != 100)
+//					result.append(":" + percentage + "%");
+//
+//				result.append("}");
+//				if (it.hasNext())
+//					result.append(" ");
+//
+//			}
+//			return result.toString();
+//		}
+//		return getCode().getSimpleDisplay();
+//	}
+//
+//	@Override
+//	public String toString() {
+//		return getCode().toString();
+//	}
+//
+//	public String debug() {
+//		return "" + getStart() + " ---> " + getEnd() + "   [" + getLoad() + "]";
+//	}
+//
+//	@Override
+//	public Day getStart() {
+//		Day result = (Day) solver.getData(TaskAttribute.START);
+//		if (diamond == false)
+//			while (getLoadAt(result) == 0)
+//				result = result.increment();
+//
+//		return result;
+//	}
+//
+//	@Override
+//	public Day getEnd() {
+//		return (Day) solver.getData(TaskAttribute.END);
+//	}
+//
+//	@Override
+//	public Load getLoad() {
+//		return (Load) solver.getData(TaskAttribute.LOAD);
+//	}
+//
+//	@Override
+//	public void setLoad(Load load) {
+//		solver.setData(TaskAttribute.LOAD, load);
+//	}
+//
+//	@Override
+//	public void setStart(Day start) {
+//		solver.setData(TaskAttribute.START, start);
+//	}
+//
+//	@Override
+//	public void setEnd(Day end) {
+//		solver.setData(TaskAttribute.END, end);
+//	}
+
+	@Override
+	public void setColors(CenterBorderColor... colors) {
+		this.colors = colors;
+	}
+
+//	@Override
+//	public void addResource(Resource resource, int percentage) {
+//		this.resources.put(resource, percentage);
+//	}
+//
+//	@Override
+//	public void setDiamond(boolean diamond) {
+//		this.diamond = diamond;
+//	}
+//
+//	@Override
+//	public boolean isDiamond() {
+//		return this.diamond;
+//	}
+//
+//	@Override
+//	public void setCompletion(int completion) {
+//		this.completion = completion;
+//	}
+//
+//	public final Url getUrl() {
+//		return url;
+//	}
+//
+//	public final CenterBorderColor getColors() {
+//		if (colors == null)
+//			return null;
+//
+//		if (colors.length == 1)
+//			return colors[0];
+//
+//		return colors[0].unlinearTo(colors[1], completion);
+//	}
+//
+//	public final int getCompletion() {
+//		return completion;
+//	}
+//
+//	public final Collection<Day> getAllPaused() {
+//		final SortedSet<Day> result = new TreeSet<>(pausedDay);
+//		for (DayOfWeek dayOfWeek : pausedDayOfWeek)
+//			addAll(result, dayOfWeek);
+//
+//		return Collections.unmodifiableCollection(result);
+//	}
+//
+//	private void addAll(SortedSet<Day> result, DayOfWeek dayOfWeek) {
+//		final Day start = getStart();
+//		final Day end = getEnd();
+//		for (Day current = start; current.compareTo(end) <= 0; current = current.increment())
+//			if (current.getDayOfWeek() == dayOfWeek)
+//				result.add(current);
+//
+//	}
+
+	@Override
+	public void setNote(Display note) {
+		this.note = note;
+	}
+
+	public Display getNote() {
+		return note;
+	}
+
+//	public LoadPlanable getDefaultPlan() {
+//		return defaultPlan;
+//	}
+//
+//	@Override
+//	public boolean isAssignedTo(Resource res) {
+//		return resources.containsKey(res);
+//	}
+
+}

src/net/sourceforge/plantuml/chronology/TimeHeaderChronology.java

@@ -0,0 +1,197 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.klimt.UTranslate;
+import net.sourceforge.plantuml.klimt.color.HColor;
+import net.sourceforge.plantuml.klimt.creole.Display;
+import net.sourceforge.plantuml.klimt.drawing.UGraphic;
+import net.sourceforge.plantuml.klimt.font.FontConfiguration;
+import net.sourceforge.plantuml.klimt.font.StringBounder;
+import net.sourceforge.plantuml.klimt.font.UFont;
+import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
+import net.sourceforge.plantuml.klimt.shape.TextBlock;
+import net.sourceforge.plantuml.klimt.shape.ULine;
+import net.sourceforge.plantuml.klimt.sprite.SpriteContainerEmpty;
+import net.sourceforge.plantuml.project.TimeHeaderParameters;
+import net.sourceforge.plantuml.project.core.PrintScale;
+import net.sourceforge.plantuml.project.draw.TimeHeader;
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.project.timescale.TimeScale;
+import net.sourceforge.plantuml.style.PName;
+import net.sourceforge.plantuml.style.SName;
+
+public class TimeHeaderChronology extends TimeHeader {
+
+	private final PrintScale printScale;
+
+	@Override
+	public double getFullHeaderHeight(StringBounder stringBounder) {
+		return getTimeHeaderHeight(stringBounder) + getHeaderNameDayHeight();
+	}
+
+	@Override
+	public double getTimeHeaderHeight(StringBounder stringBounder) {
+		final double h = thParam.getStyle(SName.timeline, SName.day).value(PName.FontSize).asDouble();
+		return h + 6;
+	}
+
+	@Override
+	public double getTimeFooterHeight(StringBounder stringBounder) {
+		final double h = thParam.getStyle(SName.timeline, SName.day).value(PName.FontSize).asDouble();
+		return h + 6;
+	}
+
+	private double getHeaderNameDayHeight() {
+		return 0;
+	}
+
+	public TimeHeaderChronology(StringBounder stringBounder, TimeHeaderParameters thParam, PrintScale printScale,
+			TimeScaleChronology timeScale) {
+		super(thParam, timeScale);
+		this.printScale = printScale;
+	}
+
+	private void drawSmallVlinesDay(UGraphic ug, TimeScale timeScale, double totalHeightWithoutFooter) {
+		ug = ug.apply(getLineColor());
+		ug = ug.apply(UTranslate.dy(6));
+		final ULine vbar = ULine.vline(totalHeightWithoutFooter + 2);
+		for (Day i = getMin(); i.compareTo(getMax().increment()) < 0; i = i.increment(printScale)) {
+			final double x1 = timeScale.getStartingPosition(i);
+			ug.apply(UTranslate.dx(x1)).draw(vbar);
+		}
+	}
+
+	private void drawSimpleDayCounter(UGraphic ug, TimeScale timeScale) {
+		for (Day i = getMin(); i.compareTo(getMax().increment()) < 0; i = i.increment(printScale)) {
+			final UFont font = thParam.getStyle(SName.timeline, SName.day).getUFont();
+			final FontConfiguration fontConfiguration = getFontConfiguration(font, false, openFontColor());
+			final TextBlock num = Display.getWithNewlines(i.toStringShort(thParam.getLocale()))
+					.create(fontConfiguration, HorizontalAlignment.LEFT, new SpriteContainerEmpty());
+			final double x1 = timeScale.getStartingPosition(i);
+			final double x2;
+			if (printScale == PrintScale.WEEKLY)
+				x2 = timeScale.getEndingPosition(i.addDays(6));
+			else
+				x2 = timeScale.getEndingPosition(i);
+			final double width = num.calculateDimension(ug.getStringBounder()).getWidth();
+			final double delta = (x2 - x1) - width;
+			if (i.compareTo(getMax().increment()) < 0)
+				num.drawU(ug.apply(UTranslate.dx(x1 + delta / 2)));
+
+		}
+	}
+
+	@Override
+	public void drawTimeHeader(UGraphic ug, double totalHeightWithoutFooter) {
+		// drawTextsBackground(ug.apply(UTranslate.dy(-3)), totalHeightWithoutFooter +
+		// 6);
+		final double xmin = getTimeScale().getStartingPosition(getMin());
+		final double xmax = getTimeScale().getEndingPosition(getMax());
+		drawSmallVlinesDay(ug, getTimeScale(), totalHeightWithoutFooter);
+		// printVerticalSeparators(ug, totalHeightWithoutFooter);
+		drawSimpleDayCounter(ug, getTimeScale());
+		// ug = ug.apply(getLineColor());
+		// ug.draw(ULine.hline(xmax - xmin));
+		// ug.apply(UTranslate.dy(getFullHeaderHeight(ug.getStringBounder()) -
+		// 3)).draw(ULine.hline(xmax - xmin));
+
+	}
+
+	@Override
+	public void drawTimeFooter(UGraphic ug) {
+		final double xmin = getTimeScale().getStartingPosition(getMin());
+		final double xmax = getTimeScale().getEndingPosition(getMax());
+		ug = ug.apply(UTranslate.dy(3));
+		// drawSmallVlinesDay(ug, getTimeScale(),
+		// getTimeFooterHeight(ug.getStringBounder()) - 3);
+		drawSimpleDayCounter(ug, getTimeScale());
+		// ug.apply(getLineColor()).draw(ULine.hline(xmax - xmin));
+	}
+
+	// Duplicate in TimeHeaderDaily
+	class Pending {
+		final double x1;
+		double x2;
+		final HColor color;
+
+		Pending(HColor color, double x1, double x2) {
+			this.x1 = x1;
+			this.x2 = x2;
+			this.color = color;
+		}
+
+		public void draw(UGraphic ug, double height) {
+			drawRectangle(ug.apply(color.bg()), height, x1, x2);
+		}
+	}
+
+	protected final void drawTextsBackground(UGraphic ug, double totalHeightWithoutFooter) {
+
+		final double height = totalHeightWithoutFooter - getFullHeaderHeight(ug.getStringBounder());
+		Pending pending = null;
+
+		for (Day wink = getMin(); wink.compareTo(getMax()) <= 0; wink = wink.increment()) {
+			final double x1 = getTimeScale().getStartingPosition(wink);
+			final double x2 = getTimeScale().getEndingPosition(wink);
+			HColor back = thParam.getColor(wink);
+//			// Day of week should be stronger than period of time (back color).
+//			final HColor backDoW = colorDaysOfWeek.get(wink.getDayOfWeek());
+//			if (backDoW != null) {
+//				back = backDoW;
+//			}
+//			if (back == null && defaultPlan.getLoadAt(wink) == 0) {
+//				back = closedBackgroundColor();
+//			}
+			if (back == null) {
+				if (pending != null)
+					pending.draw(ug, height);
+				pending = null;
+			} else {
+				if (pending != null && pending.color.equals(back) == false) {
+					pending.draw(ug, height);
+					pending = null;
+				}
+				if (pending == null)
+					pending = new Pending(back, x1, x2);
+				else
+					pending.x2 = x2;
+
+			}
+		}
+	}
+
+}

src/net/sourceforge/plantuml/chronology/TimeScaleChronology.java

@@ -0,0 +1,81 @@
+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2024, Arnaud Roques
+ *
+ * Project Info:  https://plantuml.com
+ * 
+ * If you like this project or if you find it useful, you can support us at:
+ * 
+ * https://plantuml.com/patreon (only 1$ per month!)
+ * https://plantuml.com/paypal
+ * 
+ * This file is part of PlantUML.
+ *
+ * PlantUML is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PlantUML distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ *
+ * Original Author:  Arnaud Roques
+ * 
+ *
+ */
+package net.sourceforge.plantuml.chronology;
+
+import net.sourceforge.plantuml.project.time.Day;
+import net.sourceforge.plantuml.project.timescale.TimeScale;
+
+public class TimeScaleChronology implements TimeScale {
+
+	private final double fullWidth;
+	private long min;
+	private long max;
+
+	public TimeScaleChronology(double fullWidth) {
+		this.fullWidth = fullWidth;
+	}
+
+	public double getStartingPosition(Day instant) {
+		final long wink = instant.getMillis();
+		if (wink < min)
+			throw new IllegalArgumentException();
+		if (wink > max)
+			throw new IllegalArgumentException();
+
+		return fullWidth * (wink - min) / (max - min);
+	}
+
+	public double getEndingPosition(Day instant) {
+		return getStartingPosition(instant);
+	}
+
+	public double getWidth(Day instant) {
+		throw new UnsupportedOperationException();
+	}
+
+	public boolean isBreaking(Day instant) {
+		throw new UnsupportedOperationException();
+	}
+
+	public final void setMin(long min) {
+		this.min = min;
+	}
+
+	public final void setMax(long max) {
+		this.max = max;
+	}
+
+}

src/net/sourceforge/plantuml/classdiagram/command/CommandCreateClass.java

@@ -58,6 +58,7 @@ import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -101,9 +102,7 @@ public class CommandCreateClass extends SingleLineCommand2<ClassDiagram> {
 						new RegexLeaf("GENERIC", "\\<(" + GenericRegexProducer.PATTERN + ")\\>"))), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/classdiagram/command/CommandCreateClassMultilines.java

@@ -65,6 +65,7 @@ import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.VisibilityModifier;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
@@ -115,9 +116,7 @@ public class CommandCreateClassMultilines extends CommandMultilines2<ClassDiagra
 						new RegexLeaf("GENERIC", "\\<(" + GenericRegexProducer.PATTERN + ")\\>"))), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/classdiagram/command/CommandCreateElementFull2.java

@@ -53,11 +53,11 @@ import net.sourceforge.plantuml.klimt.font.FontParam;
 import net.sourceforge.plantuml.plasma.Quark;
 import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
-import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -88,21 +88,14 @@ public class CommandCreateElementFull2 extends SingleLineCommand2<ClassDiagram>
 							new RegexLeaf("CODE1", CommandCreateElementFull.CODE_WITH_QUOTE), //
 							new RegexConcat(//
 									new RegexLeaf("DISPLAY2", CommandCreateElementFull.DISPLAY), //
-									new RegexOptional( //
-											new RegexConcat( //
-													RegexLeaf.spaceOneOrMore(), //
-													new RegexLeaf("STEREOTYPE2", "(\\<\\<.+\\>\\>)") //
-											)), //
-									RegexLeaf.spaceZeroOrMore(), //
+									StereotypePattern.optional("STEREOTYPE2"), //
 									new RegexLeaf("as"), //
 									RegexLeaf.spaceOneOrMore(), //
 									new RegexLeaf("CODE2", CommandCreateElementFull.CODE)) //
 					), //
 					RegexLeaf.spaceZeroOrMore(), //
 					new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-					RegexLeaf.spaceZeroOrMore(), //
-					new RegexLeaf("STEREOTYPE", "(\\<\\<.+\\>\\>)?"), //
-					RegexLeaf.spaceZeroOrMore(), //
+					StereotypePattern.optional("STEREOTYPE"), //
 					new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 					RegexLeaf.spaceZeroOrMore(), //
 					UrlBuilder.OPTIONAL, //
@@ -118,21 +111,14 @@ public class CommandCreateElementFull2 extends SingleLineCommand2<ClassDiagram>
 						new RegexLeaf("CODE1", CommandCreateElementFull.CODE_WITH_QUOTE), //
 						new RegexConcat(//
 								new RegexLeaf("DISPLAY2", CommandCreateElementFull.DISPLAY), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE2", "(\\<\\<.+\\>\\>)") //
-										)), //
-								RegexLeaf.spaceZeroOrMore(), //
+								StereotypePattern.optional("STEREOTYPE2"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceOneOrMore(), //
 								new RegexLeaf("CODE2", CommandCreateElementFull.CODE)) //
 				), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/classdiagram/command/CommandStereotype.java

@@ -47,6 +47,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public class CommandStereotype extends SingleLineCommand2<ClassDiagram> {
@@ -60,7 +61,8 @@ public class CommandStereotype extends SingleLineCommand2<ClassDiagram> {
 				RegexLeaf.start(), //
 				new RegexLeaf("NAME", "([%pLN_.]+|[%g][^%g]+[%g])"), //
 				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)"), RegexLeaf.end()); //
+				StereotypePattern.mandatory("STEREO"), //
+				RegexLeaf.end()); //
 	}
 
 	@Override

src/net/sourceforge/plantuml/command/CommandNamespace.java

@@ -50,6 +50,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -68,9 +69,7 @@ public class CommandNamespace extends SingleLineCommand2<ClassDiagram> {
 				new RegexLeaf("namespace"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", NAMESPACE_REGEX), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/command/CommandNamespace2.java

@@ -48,6 +48,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -72,9 +73,7 @@ public class CommandNamespace2 extends SingleLineCommand2<ClassDiagram> {
 				RegexLeaf.spaceOneOrMore(), //
 
 				new RegexLeaf("NAME", CommandNamespace.NAMESPACE_REGEX), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/command/CommandNamespaceEmpty.java

@@ -48,6 +48,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -64,9 +65,7 @@ public class CommandNamespaceEmpty extends SingleLineCommand2<ClassDiagram> {
 				new RegexLeaf("namespace"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", CommandNamespace.NAMESPACE_REGEX), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/command/CommandPackage.java

@@ -55,6 +55,7 @@ import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -80,9 +81,7 @@ public class CommandPackage extends SingleLineCommand2<AbstractEntityDiagram> {
 						)), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/command/note/CommandFactoryNote.java

@@ -55,6 +55,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.BlocLines;
 import net.sourceforge.plantuml.utils.LineLocation;
 
@@ -70,9 +71,7 @@ public final class CommandFactoryNote implements SingleMultiFactoryCommand<Abstr
 				new RegexLeaf("CODE", "([%pLN_.]+)"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				ColorParser.exp1(), //
 				RegexLeaf.end() //
 		);
@@ -91,9 +90,7 @@ public final class CommandFactoryNote implements SingleMultiFactoryCommand<Abstr
 				new RegexLeaf("CODE", "([%pLN_.]+)"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				ColorParser.exp1(), //
 				RegexLeaf.end() //
 		);

src/net/sourceforge/plantuml/command/note/CommandFactoryNoteOnEntity.java

@@ -63,6 +63,7 @@ import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -92,9 +93,7 @@ public final class CommandFactoryNoteOnEntity implements SingleMultiFactoryComma
 						new RegexLeaf("")), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				color().getRegex(), //
@@ -127,9 +126,7 @@ public final class CommandFactoryNoteOnEntity implements SingleMultiFactoryComma
 							new RegexLeaf("")), //
 					RegexLeaf.spaceZeroOrMore(), //
 					new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-					RegexLeaf.spaceZeroOrMore(), //
-					new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-					RegexLeaf.spaceZeroOrMore(), //
+					StereotypePattern.optional("STEREO"), //
 					new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 					RegexLeaf.spaceZeroOrMore(), //
 					color().getRegex(), //
@@ -153,9 +150,7 @@ public final class CommandFactoryNoteOnEntity implements SingleMultiFactoryComma
 						new RegexLeaf("")), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				color().getRegex(), //

src/net/sourceforge/plantuml/command/note/CommandFactoryTipOnEntity.java

@@ -61,6 +61,7 @@ import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -89,9 +90,7 @@ public final class CommandFactoryTipOnEntity implements SingleMultiFactoryComman
 					partialPattern, //
 					RegexLeaf.spaceZeroOrMore(), //
 					new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-					RegexLeaf.spaceZeroOrMore(), //
-					new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-					RegexLeaf.spaceZeroOrMore(), //
+					StereotypePattern.optional("STEREO"), //
 					new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 					RegexLeaf.spaceZeroOrMore(), //
 					ColorParser.exp1(), //
@@ -112,9 +111,7 @@ public final class CommandFactoryTipOnEntity implements SingleMultiFactoryComman
 				partialPattern, //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/command/note/sequence/FactorySequenceNoteAcrossCommand.java

@@ -57,6 +57,7 @@ import net.sourceforge.plantuml.sequencediagram.Participant;
 import net.sourceforge.plantuml.sequencediagram.SequenceDiagram;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -70,13 +71,9 @@ public final class FactorySequenceNoteAcrossCommand implements SingleMultiFactor
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("ACROSS", "(accross|across)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //
@@ -89,13 +86,9 @@ public final class FactorySequenceNoteAcrossCommand implements SingleMultiFactor
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("ACROSS", "(accross|across)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/command/note/sequence/FactorySequenceNoteCommand.java

@@ -59,6 +59,7 @@ import net.sourceforge.plantuml.sequencediagram.Participant;
 import net.sourceforge.plantuml.sequencediagram.SequenceDiagram;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -66,7 +67,7 @@ import net.sourceforge.plantuml.utils.BlocLines;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public final class FactorySequenceNoteCommand implements SingleMultiFactoryCommand<SequenceDiagram> {
-    // ::remove folder when __HAXE__
+	// ::remove folder when __HAXE__
 
 	private IRegex getRegexConcatMultiLine() {
 		return RegexConcat.build(FactorySequenceNoteCommand.class.getName() + "multi", RegexLeaf.start(), //
@@ -74,15 +75,11 @@ public final class FactorySequenceNoteCommand implements SingleMultiFactoryComma
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("POSITION", "(right|left|over)"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("PARTICIPANT", "(?:of[%s]+)?([%pLN_.@]+|[%g][^%g]+[%g])"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //
@@ -95,15 +92,11 @@ public final class FactorySequenceNoteCommand implements SingleMultiFactoryComma
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("POSITION", "(right|left|over)"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("PARTICIPANT", "(?:of[%s])?([%pLN_.@]+|[%g][^%g]+[%g])"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/command/note/sequence/FactorySequenceNoteOnArrowCommand.java

@@ -60,6 +60,7 @@ import net.sourceforge.plantuml.sequencediagram.NoteStyle;
 import net.sourceforge.plantuml.sequencediagram.SequenceDiagram;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -72,13 +73,9 @@ public final class FactorySequenceNoteOnArrowCommand implements SingleMultiFacto
 		return RegexConcat.build(FactorySequenceNoteOnArrowCommand.class.getName() + "multi", RegexLeaf.start(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceOneOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("POSITION", "(right|left|bottom|top)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				ColorParser.exp1(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //
@@ -89,13 +86,9 @@ public final class FactorySequenceNoteOnArrowCommand implements SingleMultiFacto
 		return RegexConcat.build(FactorySequenceNoteOnArrowCommand.class.getName() + "single", RegexLeaf.start(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceOneOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("POSITION", "(right|left|bottom|top)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				ColorParser.exp1(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/command/note/sequence/FactorySequenceNoteOverSeveralCommand.java

@@ -58,6 +58,7 @@ import net.sourceforge.plantuml.sequencediagram.Participant;
 import net.sourceforge.plantuml.sequencediagram.SequenceDiagram;
 import net.sourceforge.plantuml.skin.ColorParam;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -72,9 +73,7 @@ public final class FactorySequenceNoteOverSeveralCommand implements SingleMultiF
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("over"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("P1", "([%pLN_.@]+|[%g][^%g]+[%g])"), //
@@ -82,9 +81,7 @@ public final class FactorySequenceNoteOverSeveralCommand implements SingleMultiF
 				new RegexLeaf(","), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("P2", "([%pLN_.@]+|[%g][^%g]+[%g])"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //
@@ -98,9 +95,7 @@ public final class FactorySequenceNoteOverSeveralCommand implements SingleMultiF
 				new RegexLeaf("VMERGE", "(/)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("STYLE", "(note|hnote|rnote)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO1", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO1"), //
 				new RegexLeaf("over"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("P1", "([%pLN_.@]+|[%g][^%g]+[%g])"), //
@@ -108,9 +103,7 @@ public final class FactorySequenceNoteOverSeveralCommand implements SingleMultiF
 				new RegexLeaf(","), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("P2", "([%pLN_.@]+|[%g][^%g]+[%g])"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO2", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO2"), //
 				color().getRegex(), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/core/Diagram.java

@@ -68,7 +68,7 @@ public interface Diagram {
 	 */
 	ImageData exportDiagram(OutputStream os, int num, FileFormatOption fileFormat) throws IOException;
 
-	void exportDiagramGraphic(UGraphic ug);
+	void exportDiagramGraphic(UGraphic ug, FileFormatOption fileFormat);
 
 	/**
 	 * Number of images in this diagram (usually, 1)

src/net/sourceforge/plantuml/core/DiagramType.java

@@ -38,9 +38,9 @@ package net.sourceforge.plantuml.core;
 import net.sourceforge.plantuml.utils.StartUtils;
 
 public enum DiagramType {
-    // ::remove folder when __HAXE__
-	UML, BPM, DITAA, DOT, PROJECT, JCCKIT, SALT, FLOW, CREOLE, MATH, LATEX, DEFINITION, GANTT, NW,
-	MINDMAP, WBS, WIRE, JSON, GIT, BOARD, YAML, HCL, EBNF, REGEX, FILES, UNKNOWN;
+	// ::remove folder when __HAXE__
+	UML, BPM, DITAA, DOT, PROJECT, JCCKIT, SALT, FLOW, CREOLE, MATH, LATEX, DEFINITION, GANTT, CHRONOLOGY, NW, MINDMAP,
+	WBS, WIRE, JSON, GIT, BOARD, YAML, HCL, EBNF, REGEX, FILES, UNKNOWN;
 
 	static public DiagramType getTypeFromArobaseStart(String s) {
 		s = s.toLowerCase();
@@ -59,7 +59,8 @@ public enum DiagramType {
 		if (StartUtils.startsWithSymbolAnd("startdot", s))
 			return DOT;
 
-		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or __LGPL__
+		// ::comment when __CORE__ or __MIT__ or __EPL__ or __BSD__ or __ASL__ or
+		// __LGPL__
 		if (StartUtils.startsWithSymbolAnd("startjcckit", s))
 			return JCCKIT;
 		// ::done
@@ -126,6 +127,9 @@ public enum DiagramType {
 		if (StartUtils.startsWithSymbolAnd("startfiles", s))
 			return FILES;
 
+		if (StartUtils.startsWithSymbolAnd("startchronology", s))
+			return CHRONOLOGY;
+
 		return UNKNOWN;
 	}
 }

src/net/sourceforge/plantuml/descdiagram/CommandCreateDomain.java

@@ -53,6 +53,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -73,11 +74,11 @@ public class CommandCreateDomain extends SingleLineCommand2<DescriptionDiagram>
 				new RegexLeaf("DISPLAY", DISPLAY_WITH_GENERIC), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("as"), //
-				RegexLeaf.spaceOneOrMore(), new RegexLeaf("CODE", "([a-zA-Z0-9]+)"), RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
+				RegexLeaf.spaceOneOrMore(), //
+				new RegexLeaf("CODE", "([a-zA-Z0-9]+)"), //
+				StereotypePattern.optional("STEREO"), //
 				// domain: lexical, causal, biddable
 				// requirement: FR, NFR, quality
-				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("GROUP", "(\\{)?"), RegexLeaf.end());
 	}
 

src/net/sourceforge/plantuml/descdiagram/command/CommandArchimate.java

@@ -56,6 +56,7 @@ import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public class CommandArchimate extends SingleLineCommand2<DescriptionDiagram> {
@@ -74,44 +75,25 @@ public class CommandArchimate extends SingleLineCommand2<DescriptionDiagram> {
 						new RegexLeaf("CODE1", CommandCreateElementFull.CODE_WITH_QUOTE), //
 						new RegexConcat(//
 								new RegexLeaf("DISPLAY2", CommandCreateElementFull.DISPLAY), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE2", "(?:\\<\\<([-\\w]+)\\>\\>)") //
-										)), //
-								RegexLeaf.spaceZeroOrMore(), //
+								StereotypePattern.optionalArchimate("STEREOTYPE2"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceOneOrMore(), //
 								new RegexLeaf("CODE2", CommandCreateElementFull.CODE)), //
 						new RegexConcat(//
 								new RegexLeaf("CODE3", CommandCreateElementFull.CODE), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE3", "(?:\\<\\<([-\\w]+)\\>\\>)") //
-										)), //
-								RegexLeaf.spaceOneOrMore(), //
+								StereotypePattern.optionalArchimate("STEREOTYPE3"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceZeroOrMore(), //
 								new RegexLeaf("DISPLAY3", CommandCreateElementFull.DISPLAY)), //
 						new RegexConcat(//
 								new RegexLeaf("DISPLAY4", CommandCreateElementFull.DISPLAY_WITHOUT_QUOTE), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE4", "(?:\\<\\<([-\\w]+)\\>\\>)") //
-										)), //
-								RegexLeaf.spaceZeroOrMore(), //
+								StereotypePattern.optionalArchimate("STEREOTYPE4"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceOneOrMore(), //
 								new RegexLeaf("CODE4", CommandCreateElementFull.CODE)) //
 				), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexOptional( //
-						new RegexConcat( //
-								RegexLeaf.spaceZeroOrMore(), //
-								new RegexLeaf("STEREOTYPE", "(?:\\<\\<([-\\w]+)\\>\\>)") //
-						)), RegexLeaf.end());
+				StereotypePattern.optionalArchimate("STEREOTYPE"), //
+				RegexLeaf.end());
 	}
 
 	private static ColorParser color() {
@@ -134,7 +116,7 @@ public class CommandArchimate extends SingleLineCommand2<DescriptionDiagram> {
 			entity = diagram.reallyCreateLeaf(quark, Display.getWithNewlines(display), LeafType.DESCRIPTION,
 					USymbols.ARCHIMATE);
 
-		final String icon = arg.getLazzy("STEREOTYPE", 0);
+		final String icon = StereotypePattern.removeChevronBrackets(arg.getLazzy("STEREOTYPE", 0));
 
 		entity.setDisplay(Display.getWithNewlines(display));
 		entity.setUSymbol(USymbols.ARCHIMATE);

src/net/sourceforge/plantuml/descdiagram/command/CommandArchimateMultilines.java

@@ -56,6 +56,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.utils.BlocLines;
 
@@ -77,13 +78,7 @@ public class CommandArchimateMultilines extends CommandMultilines2<AbstractEntit
 				color().getRegex(), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("CODE", "([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexOptional( //
-						new RegexConcat( //
-								RegexLeaf.spaceOneOrMore(), //
-								new RegexLeaf("STEREOTYPE", "(?:\\<\\<([-\\w]+)\\>\\>)") //
-						)), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optionalArchimate("STEREOTYPE"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //
@@ -108,7 +103,7 @@ public class CommandArchimateMultilines extends CommandMultilines2<AbstractEntit
 		if (quark.getData() != null)
 			return CommandExecutionResult.error("Already exists " + quark.getName());
 
-		final String icon = line0.getLazzy("STEREOTYPE", 0);
+		final String icon = StereotypePattern.removeChevronBrackets(line0.getLazzy("STEREOTYPE", 0));
 
 		final Entity entity = diagram.reallyCreateLeaf(quark, Display.getWithNewlines(quark), LeafType.DESCRIPTION,
 				USymbols.RECTANGLE);

src/net/sourceforge/plantuml/descdiagram/command/CommandCreateElementFull.java

@@ -57,11 +57,11 @@ import net.sourceforge.plantuml.plasma.Quark;
 import net.sourceforge.plantuml.regex.IRegex;
 import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
-import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -84,43 +84,26 @@ public class CommandCreateElementFull extends SingleLineCommand2<DescriptionDiag
 						new RegexLeaf("CODE1", CODE_WITH_QUOTE), //
 						new RegexConcat(//
 								new RegexLeaf("DISPLAY2", DISPLAY), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE2", "(\\<\\<.+\\>\\>)")//
-										)), //
-								RegexLeaf.spaceZeroOrMore(), //
+								StereotypePattern.optional("STEREOTYPE2"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceOneOrMore(), //
 								new RegexLeaf("CODE2", CODE)), //
 						new RegexConcat(//
 								new RegexLeaf("CODE3", CODE), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE3", "(\\<\\<.+\\>\\>)") //
-										)), //
-								RegexLeaf.spaceOneOrMore(), //
+								StereotypePattern.optional("STEREOTYPE3"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceZeroOrMore(), //
 								new RegexLeaf("DISPLAY3", DISPLAY)), //
 						new RegexConcat(//
 								new RegexLeaf("DISPLAY4", DISPLAY_WITHOUT_QUOTE), //
-								new RegexOptional( //
-										new RegexConcat( //
-												RegexLeaf.spaceOneOrMore(), //
-												new RegexLeaf("STEREOTYPE4", "(\\<\\<.+\\>\\>)") //
-										)), //
-								RegexLeaf.spaceZeroOrMore(), //
+								StereotypePattern.optional("STEREOTYPE4"), //
 								new RegexLeaf("as"), //
 								RegexLeaf.spaceOneOrMore(), //
 								new RegexLeaf("CODE4", CODE)) //
 				), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/descdiagram/command/CommandCreateElementMultilines.java

@@ -59,6 +59,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -93,9 +94,7 @@ public class CommandCreateElementMultilines extends CommandMultilines2<AbstractE
 			return RegexConcat.build(CommandCreateElementMultilines.class.getName() + type, RegexLeaf.start(), //
 					new RegexLeaf("TYPE", "(" + CommandCreateElementFull.ALL_TYPES + ")[%s]+"), //
 					new RegexLeaf("CODE", "([%pLN_.]+)"), //
-					RegexLeaf.spaceZeroOrMore(), //
-					new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-					RegexLeaf.spaceZeroOrMore(), //
+					StereotypePattern.optional("STEREO"), //
 					UrlBuilder.OPTIONAL, //
 					RegexLeaf.spaceZeroOrMore(), //
 					ColorParser.exp1(), //
@@ -110,9 +109,7 @@ public class CommandCreateElementMultilines extends CommandMultilines2<AbstractE
 			return RegexConcat.build(CommandCreateElementMultilines.class.getName() + type, RegexLeaf.start(), //
 					new RegexLeaf("TYPE", "(" + CommandCreateElementFull.ALL_TYPES + ")[%s]+"), //
 					new RegexLeaf("CODE", "([%pLN_.]+)"), //
-					RegexLeaf.spaceZeroOrMore(), //
-					new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-					RegexLeaf.spaceZeroOrMore(), //
+					StereotypePattern.optional("STEREO"), //
 					UrlBuilder.OPTIONAL, //
 					RegexLeaf.spaceZeroOrMore(), //
 					ColorParser.exp1(), //

src/net/sourceforge/plantuml/descdiagram/command/CommandLinkElement.java

@@ -59,6 +59,7 @@ import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.ActorStyle;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.utils.Direction;
 import net.sourceforge.plantuml.utils.LineLocation;
 
@@ -104,9 +105,7 @@ public class CommandLinkElement extends SingleLineCommand2<DescriptionDiagram> {
 //				RegexLeaf.spaceZeroOrMore(), //
 
 				color().getRegex(), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("LABEL_LINK", "(?::[%s]*(.+))?"), //
 				RegexLeaf.end());
 	}

src/net/sourceforge/plantuml/descdiagram/command/CommandPackageWithUSymbol.java

@@ -57,6 +57,7 @@ import net.sourceforge.plantuml.regex.RegexOr;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotag;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -115,9 +116,7 @@ public class CommandPackageWithUSymbol extends SingleLineCommand2<AbstractEntity
 				), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREOTYPE", "(\\<\\<.*\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREOTYPE"), //
 				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				UrlBuilder.OPTIONAL, //

src/net/sourceforge/plantuml/ebnf/PSystemEbnf.java

@@ -97,11 +97,11 @@ public class PSystemEbnf extends TitledDiagram {
 	@Override
 	protected ImageData exportDiagramNow(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		if (expressions.size() == 0) {
 			final Style style = ETile.getStyleSignature().getMergedStyle(getSkinParam().getCurrentStyleBuilder());
 			final FontConfiguration fc = style.getFontConfiguration(getSkinParam().getIHtmlColorSet());

src/net/sourceforge/plantuml/filesdiagram/FilesDiagram.java

@@ -89,11 +89,11 @@ public class FilesDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return list;
 	}
 

src/net/sourceforge/plantuml/flowdiagram/FlowDiagram.java

@@ -230,7 +230,7 @@ public class FlowDiagram extends UmlDiagram implements TextBlock {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return this;
 	}
 

src/net/sourceforge/plantuml/gitlog/GitDiagram.java

@@ -68,7 +68,7 @@ public class GitDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	private void drawInternal(UGraphic ug) {
@@ -84,7 +84,7 @@ public class GitDiagram extends UmlDiagram {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {

src/net/sourceforge/plantuml/help/Help.java

@@ -96,7 +96,7 @@ public class Help extends UmlDiagram {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		throw new UnsupportedOperationException();
 	}
 

src/net/sourceforge/plantuml/jsondiagram/JsonDiagram.java

@@ -94,7 +94,7 @@ public class JsonDiagram extends TitledDiagram {
 	protected ImageData exportDiagramNow(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	private void drawInternal(UGraphic ug) {
@@ -113,7 +113,7 @@ public class JsonDiagram extends TitledDiagram {
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(final FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {
@@ -121,7 +121,7 @@ public class JsonDiagram extends TitledDiagram {
 			}
 
 			public XDimension2D calculateDimension(StringBounder stringBounder) {
-				return TextBlockUtils.getMinMax(getTextBlock(), stringBounder, true).getDimension();
+				return TextBlockUtils.getMinMax(getTextMainBlock(fileFormatOption), stringBounder, true).getDimension();
 			}
 		};
 	}

src/net/sourceforge/plantuml/klimt/sprite/ListSpriteDiagram.java

@@ -79,11 +79,11 @@ public class ListSpriteDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {

src/net/sourceforge/plantuml/klimt/sprite/StdlibDiagram.java

@@ -91,11 +91,11 @@ public class StdlibDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {

src/net/sourceforge/plantuml/mindmap/MindMapDiagram.java

@@ -83,11 +83,11 @@ public class MindMapDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 
 			public void drawU(UGraphic ug) {

src/net/sourceforge/plantuml/nwdiag/NwDiagram.java

@@ -331,11 +331,11 @@ public class NwDiagram extends UmlDiagram {
 	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
 
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock()).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		return new AbstractTextBlock() {
 			public void drawU(UGraphic ug) {
 				drawMe(ug);

src/net/sourceforge/plantuml/objectdiagram/command/CommandCreateEntityObject.java

@@ -52,6 +52,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.url.UrlMode;
@@ -68,9 +69,7 @@ public class CommandCreateEntityObject extends SingleLineCommand2<AbstractClassO
 				new RegexLeaf("TYPE", "object"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", "(?:[%g]([^%g]+)[%g][%s]+as[%s]+)?([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), RegexLeaf.end());

src/net/sourceforge/plantuml/objectdiagram/command/CommandCreateEntityObjectMultilines.java

@@ -55,6 +55,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.skin.VisibilityModifier;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.utils.BlocLines;
@@ -70,9 +71,7 @@ public class CommandCreateEntityObjectMultilines extends CommandMultilines2<Abst
 				new RegexLeaf("TYPE", "object"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", "(?:[%g]([^%g]+)[%g][%s]+as[%s]+)?([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/objectdiagram/command/CommandCreateJson.java

@@ -59,6 +59,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.utils.BlocLines;
@@ -74,9 +75,7 @@ public class CommandCreateJson extends CommandMultilines2<AbstractEntityDiagram>
 				new RegexLeaf("TYPE", "json"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", "(?:[%g]([^%g]+)[%g][%s]+as[%s]+)?([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/objectdiagram/command/CommandCreateJsonSingleLine.java

@@ -56,6 +56,7 @@ import net.sourceforge.plantuml.regex.RegexConcat;
 import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.utils.LineLocation;
 
@@ -70,9 +71,7 @@ public class CommandCreateJsonSingleLine extends SingleLineCommand2<AbstractClas
 				new RegexLeaf("TYPE", "json"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", "(?:[%g]([^%g]+)[%g][%s]+as[%s]+)?([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				ColorParser.exp1(), //

src/net/sourceforge/plantuml/objectdiagram/command/CommandCreateMap.java

@@ -62,6 +62,7 @@ import net.sourceforge.plantuml.regex.RegexLeaf;
 import net.sourceforge.plantuml.regex.RegexOptional;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.stereo.Stereotype;
+import net.sourceforge.plantuml.stereo.StereotypePattern;
 import net.sourceforge.plantuml.text.StringLocated;
 import net.sourceforge.plantuml.url.UrlBuilder;
 import net.sourceforge.plantuml.utils.BlocLines;
@@ -77,9 +78,7 @@ public class CommandCreateMap extends CommandMultilines2<AbstractEntityDiagram>
 				new RegexLeaf("TYPE", "map"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("NAME", "(?:[%g]([^%g]+)[%g][%s]+as[%s]+)?([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("STEREO", "(\\<\\<.+\\>\\>)?"), //
-				RegexLeaf.spaceZeroOrMore(), //
+				StereotypePattern.optional("STEREO"), //
 				UrlBuilder.OPTIONAL, //
 				RegexLeaf.spaceZeroOrMore(), //
 				color().getRegex(), //

src/net/sourceforge/plantuml/project/GanttDiagram.java

@@ -51,7 +51,6 @@ import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import net.sourceforge.plantuml.FileFormat;
 import net.sourceforge.plantuml.FileFormatOption;
 import net.sourceforge.plantuml.TitledDiagram;
 import net.sourceforge.plantuml.WithSprite;
@@ -162,7 +161,7 @@ public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprit
 	}
 
 	public DiagramDescription getDescription() {
-		return new DiagramDescription("(Project)");
+		return new DiagramDescription("(Gantt)");
 	}
 
 	public void setWeekNumberStrategy(DayOfWeek firstDayOfWeek, int minimalDaysInFirstWeek) {
@@ -180,8 +179,7 @@ public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprit
 	@Override
 	protected ImageData exportDiagramNow(OutputStream os, int index, FileFormatOption fileFormatOption)
 			throws IOException {
-		final StringBounder stringBounder = fileFormatOption.getDefaultStringBounder(getSkinParam());
-		return createImageBuilder(fileFormatOption).drawable(getTextBlock(stringBounder)).write(os);
+		return createImageBuilder(fileFormatOption).drawable(getTextMainBlock(fileFormatOption)).write(os);
 	}
 
 	public void setPrintScale(PrintScale printScale) {
@@ -220,13 +218,8 @@ public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprit
 	}
 
 	@Override
-	protected TextBlock getTextBlock() {
-		final FileFormatOption fileFormatOption = new FileFormatOption(FileFormat.PNG);
+	protected TextBlock getTextMainBlock(FileFormatOption fileFormatOption) {
 		final StringBounder stringBounder = fileFormatOption.getDefaultStringBounder(getSkinParam());
-		return getTextBlock(stringBounder);
-	}
-
-	private TextBlock getTextBlock(StringBounder stringBounder) {
 		if (printStart == null) {
 			initMinMax();
 		} else {
@@ -450,13 +443,12 @@ public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprit
 			} else if (task instanceof TaskGroup) {
 				final TaskGroup taskGroup = (TaskGroup) task;
 				draw = new TaskDrawGroup(timeScale, y, taskGroup.getCode().getSimpleDisplay(), getStart(taskGroup),
-						getEnd(taskGroup), getSkinParam(), task, this, task.getStyleBuilder());
+						getEnd(taskGroup), task, this, task.getStyleBuilder());
 			} else {
 				final TaskImpl tmp = (TaskImpl) task;
 				final String disp = hideResourceName ? tmp.getCode().getSimpleDisplay() : tmp.getPrettyDisplay();
 				if (tmp.isDiamond()) {
-					draw = new TaskDrawDiamond(timeScale, y, disp, getStart(tmp), getSkinParam(), task, this,
-							task.getStyleBuilder());
+					draw = new TaskDrawDiamond(timeScale, y, disp, getStart(tmp), task, this, task.getStyleBuilder());
 				} else {
 					final boolean oddStart = printStart != null && min.compareTo(getStart(tmp)) == 0;
 					final boolean oddEnd = printStart != null && max.compareTo(getEnd(tmp)) == 0;

src/net/sourceforge/plantuml/project/GanttDiagramFactory.java

@@ -79,8 +79,8 @@ import net.sourceforge.plantuml.style.CommandStyleMultilinesCSS;
 
 public class GanttDiagramFactory extends PSystemCommandFactory {
 
-	static private final List<Subject> subjects() {
-		return Arrays.<Subject>asList(SubjectTask.ME, SubjectProject.ME, SubjectDayOfWeek.ME, SubjectDayAsDate.ME,
+	static private final List<Subject<GanttDiagram>> subjects() {
+		return Arrays.asList(SubjectTask.ME, SubjectProject.ME, SubjectDayOfWeek.ME, SubjectDayAsDate.ME,
 				SubjectDaysAsDates.ME, SubjectResource.ME, SubjectToday.ME, SubjectSeparator.ME);
 	}
 
@@ -120,28 +120,28 @@ public class GanttDiagramFactory extends PSystemCommandFactory {
 	}
 
 	private void addLanguageCommands(List<Command> cmd) {
-		for (Subject subject : subjects())
-			for (SentenceSimple sentenceA : subject.getSentences()) {
+		for (Subject<GanttDiagram> subject : subjects())
+			for (SentenceSimple<GanttDiagram> sentenceA : subject.getSentences()) {
 				cmd.add(NaturalCommand.create(sentenceA));
-				for (SentenceSimple sentenceB : subject.getSentences()) {
+				for (SentenceSimple<GanttDiagram> sentenceB : subject.getSentences()) {
 					final String signatureA = sentenceA.getSignature();
 					final String signatureB = sentenceB.getSignature();
 					if (signatureA.equals(signatureB) == false)
-						cmd.add(NaturalCommand.create(new SentenceAnd(sentenceA, sentenceB)));
+						cmd.add(NaturalCommand.create(new SentenceAnd<GanttDiagram>(sentenceA, sentenceB)));
 
 				}
 			}
 
-		for (Subject subject : subjects())
-			for (SentenceSimple sentenceA : subject.getSentences())
-				for (SentenceSimple sentenceB : subject.getSentences())
-					for (SentenceSimple sentenceC : subject.getSentences()) {
+		for (Subject<GanttDiagram> subject : subjects())
+			for (SentenceSimple<GanttDiagram> sentenceA : subject.getSentences())
+				for (SentenceSimple<GanttDiagram> sentenceB : subject.getSentences())
+					for (SentenceSimple<GanttDiagram> sentenceC : subject.getSentences()) {
 						final String signatureA = sentenceA.getSignature();
 						final String signatureB = sentenceB.getSignature();
 						final String signatureC = sentenceC.getSignature();
 						if (signatureA.equals(signatureB) == false && signatureA.equals(signatureC) == false
 								&& signatureC.equals(signatureB) == false)
-							cmd.add(NaturalCommand.create(new SentenceAndAnd(sentenceA, sentenceB, sentenceC)));
+							cmd.add(NaturalCommand.create(new SentenceAndAnd<GanttDiagram>(sentenceA, sentenceB, sentenceC)));
 					}
 	}
 

src/net/sourceforge/plantuml/project/TimeHeaderParameters.java

@@ -37,6 +37,7 @@ package net.sourceforge.plantuml.project;
 
 import java.util.Locale;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 
 import net.sourceforge.plantuml.klimt.UStroke;
@@ -70,7 +71,7 @@ public class TimeHeaderParameters implements GanttStyle {
 		this.scale = scale;
 		this.min = min;
 		this.max = max;
-		this.colorSet = colorSet;
+		this.colorSet = Objects.requireNonNull(colorSet);
 		this.ganttStyle = ganttStyle;
 		this.locale = locale;
 		this.openClose = openClose;

src/net/sourceforge/plantuml/project/command/CommandColorTask.java

@@ -59,7 +59,8 @@ public class CommandColorTask extends SingleLineCommand2<GanttDiagram> {
 				new RegexLeaf("CODE", "\\[([%pLN_.]+)\\]"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("COLORS", "#(\\w+)(?:/(#?\\w+))?"), //
-				RegexLeaf.spaceZeroOrMore(), RegexLeaf.end());
+				RegexLeaf.spaceZeroOrMore(), //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandFootbox.java

@@ -45,7 +45,7 @@ import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.utils.LineLocation;
 
 public class CommandFootbox extends SingleLineCommand2<GanttDiagram> {
-    // ::remove folder when __HAXE__
+	// ::remove folder when __HAXE__
 
 	public CommandFootbox() {
 		super(getRegexConcat());
@@ -55,7 +55,8 @@ public class CommandFootbox extends SingleLineCommand2<GanttDiagram> {
 		return RegexConcat.build(CommandFootbox.class.getName(), RegexLeaf.start(), //
 				new RegexLeaf("TYPE", "(hide|show)?"), //
 				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("footbox"), RegexLeaf.end()); //
+				new RegexLeaf("footbox"), //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandGanttArrow.java

@@ -63,7 +63,8 @@ public class CommandGanttArrow extends SingleLineCommand2<GanttDiagram> {
 				new RegexLeaf("\\>"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("CODE2", "([%pLN_.]+)"), //
-				RegexLeaf.spaceZeroOrMore(), RegexLeaf.end());
+				RegexLeaf.spaceZeroOrMore(), //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandHideResourceFootbox.java

@@ -57,7 +57,7 @@ public class CommandHideResourceFootbox extends SingleLineCommand2<GanttDiagram>
 				new RegexLeaf("ress?ources?"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("footbox"), //
-				RegexLeaf.end()); //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandHideResourceName.java

@@ -57,7 +57,7 @@ public class CommandHideResourceName extends SingleLineCommand2<GanttDiagram> {
 				new RegexLeaf("ress?ources?"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("names?"), //
-				RegexLeaf.end()); //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandLabelOnColumn.java

@@ -70,7 +70,8 @@ public class CommandLabelOnColumn extends SingleLineCommand2<GanttDiagram> {
 						new RegexLeaf("ALIGNED", "(left|right)"), //
 						RegexLeaf.spaceZeroOrMore(), //
 						new RegexLeaf("aligned") //
-				)), RegexLeaf.end()); //
+				)), // 
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandLanguage.java

@@ -55,7 +55,7 @@ public class CommandLanguage extends SingleLineCommand2<GanttDiagram> {
 				new RegexLeaf("language"), //
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("LANG", "(\\w+)"), //
-				RegexLeaf.end()); //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandPrintBetween.java

@@ -66,7 +66,7 @@ public class CommandPrintBetween extends SingleLineCommand2<GanttDiagram> {
 				new RegexLeaf("and"), //
 				RegexLeaf.spaceOneOrMore(), //
 				pattern.toRegex("END"), //
-				RegexLeaf.end()); //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandPrintScale.java

@@ -77,7 +77,7 @@ public class CommandPrintScale extends SingleLineCommand2<GanttDiagram> {
 						new RegexLeaf("zoom"), //
 						RegexLeaf.spaceOneOrMore(), //
 						new RegexLeaf("ZOOM", "([.\\d]+)"))), //
-				RegexLeaf.end()); //
+				RegexLeaf.end());
 	}
 
 	@Override

src/net/sourceforge/plantuml/project/command/CommandTaskCompleteDefault.java

@@ -64,7 +64,6 @@ public class CommandTaskCompleteDefault extends SingleLineCommand2<GanttDiagram>
 				RegexLeaf.spaceOneOrMore(), //
 				new RegexLeaf("VALUE", "(\\d+)"), //
 				new RegexLeaf(".*"), //
-				RegexLeaf.spaceZeroOrMore(), //
 				RegexLeaf.end());
 	}
 

src/net/sourceforge/plantuml/project/command/NaturalCommand.java

@@ -37,27 +37,27 @@ package net.sourceforge.plantuml.project.command;
 
 import net.sourceforge.plantuml.command.CommandExecutionResult;
 import net.sourceforge.plantuml.command.SingleLineCommand2;
-import net.sourceforge.plantuml.project.GanttDiagram;
+import net.sourceforge.plantuml.core.Diagram;
 import net.sourceforge.plantuml.project.lang.Sentence;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.utils.LineLocation;
 
-public class NaturalCommand extends SingleLineCommand2<GanttDiagram> {
+public class NaturalCommand<D extends Diagram> extends SingleLineCommand2<D> {
 
-	private final Sentence sentence;
+	private final Sentence<D> sentence;
 
-	public NaturalCommand(Sentence sentence) {
+	public NaturalCommand(Sentence<D> sentence) {
 		super(sentence.toRegex());
 		this.sentence = sentence;
 	}
 
 	@Override
-	final protected CommandExecutionResult executeArg(GanttDiagram system, LineLocation location, RegexResult arg) {
+	final protected CommandExecutionResult executeArg(D system, LineLocation location, RegexResult arg) {
 		return sentence.execute(system, arg);
 	}
 
-	public static NaturalCommand create(Sentence sentence) {
-		return new NaturalCommand(sentence);
+	public static <D extends Diagram> NaturalCommand<D> create(Sentence<D> sentence) {
+		return new NaturalCommand<D>(sentence);
 
 	}
 

src/net/sourceforge/plantuml/project/core/AbstractTask.java

@@ -35,6 +35,7 @@
  */
 package net.sourceforge.plantuml.project.core;
 
+import net.sourceforge.plantuml.stereo.Stereotype;
 import net.sourceforge.plantuml.style.StyleBuilder;
 
 public abstract class AbstractTask implements Task {
@@ -44,6 +45,7 @@ public abstract class AbstractTask implements Task {
 
 	private Task row;
 	private String displayString;
+	private Stereotype stereotype;
 
 	protected AbstractTask(StyleBuilder styleBuilder, TaskCode code) {
 		this.styleBuilder = styleBuilder;
@@ -80,5 +82,16 @@ public abstract class AbstractTask implements Task {
 	public String getDisplayString() {
 		return this.displayString;
 	}
+	
+	@Override
+	public Stereotype getStereotype() {
+		return stereotype;
+	}
+
+	@Override
+	public final void setStereotype(Stereotype stereotype) {
+		this.stereotype = stereotype;
+	}
+
 
 }

src/net/sourceforge/plantuml/project/core/Task.java

@@ -40,6 +40,7 @@ import net.sourceforge.plantuml.project.Load;
 import net.sourceforge.plantuml.project.lang.CenterBorderColor;
 import net.sourceforge.plantuml.project.time.Day;
 import net.sourceforge.plantuml.project.time.DayOfWeek;
+import net.sourceforge.plantuml.stereo.Stereotype;
 import net.sourceforge.plantuml.style.StyleBuilder;
 import net.sourceforge.plantuml.url.Url;
 
@@ -85,4 +86,8 @@ public interface Task extends Moment {
 
 	public String getDisplayString();
 
+	public Stereotype getStereotype();
+
+	public void setStereotype(Stereotype stereotype);
+
 }

src/net/sourceforge/plantuml/project/draw/AbstractTaskDraw.java

@@ -49,11 +49,11 @@ import net.sourceforge.plantuml.project.time.Day;
 import net.sourceforge.plantuml.project.timescale.TimeScale;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.style.ClockwiseTopRightBottomLeft;
-import net.sourceforge.plantuml.style.ISkinParam;
 import net.sourceforge.plantuml.style.PName;
 import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.style.StyleBuilder;
+import net.sourceforge.plantuml.style.StyleSignature;
 import net.sourceforge.plantuml.style.StyleSignatureBasic;
 import net.sourceforge.plantuml.url.Url;
 import net.sourceforge.plantuml.utils.Direction;
@@ -85,8 +85,8 @@ public abstract class AbstractTaskDraw implements TaskDraw {
 		this.note = note;
 	}
 
-	public AbstractTaskDraw(TimeScale timeScale, Real y, String prettyDisplay, Day start, ISkinParam skinParam,
-			Task task, ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
+	public AbstractTaskDraw(TimeScale timeScale, Real y, String prettyDisplay, Day start, Task task,
+			ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
 		this.y = y;
 		this.styleBuilder = styleBuilder;
 		this.toTaskDraw = toTaskDraw;
@@ -96,7 +96,7 @@ public abstract class AbstractTaskDraw implements TaskDraw {
 		this.task = task;
 	}
 
-	abstract StyleSignatureBasic getStyleSignature();
+	abstract StyleSignature getStyleSignature();
 
 	private StyleSignatureBasic getStyleSignatureUnstarted() {
 		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, SName.task, SName.unstarted);

src/net/sourceforge/plantuml/project/draw/TaskDrawDiamond.java

@@ -54,21 +54,21 @@ import net.sourceforge.plantuml.project.time.Day;
 import net.sourceforge.plantuml.project.timescale.TimeScale;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.style.ClockwiseTopRightBottomLeft;
-import net.sourceforge.plantuml.style.ISkinParam;
 import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.style.StyleBuilder;
+import net.sourceforge.plantuml.style.StyleSignature;
 import net.sourceforge.plantuml.style.StyleSignatureBasic;
 
 public class TaskDrawDiamond extends AbstractTaskDraw {
 
-	public TaskDrawDiamond(TimeScale timeScale, Real y, String prettyDisplay, Day start, ISkinParam skinParam,
-			Task task, ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
-		super(timeScale, y, prettyDisplay, start, skinParam, task, toTaskDraw, styleBuilder);
+	public TaskDrawDiamond(TimeScale timeScale, Real y, String prettyDisplay, Day start, Task task,
+			ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
+		super(timeScale, y, prettyDisplay, start, task, toTaskDraw, styleBuilder);
 	}
 
 	@Override
-	StyleSignatureBasic getStyleSignature() {
+	StyleSignature getStyleSignature() {
 		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, SName.milestone);
 	}
 

src/net/sourceforge/plantuml/project/draw/TaskDrawGroup.java

@@ -54,22 +54,19 @@ import net.sourceforge.plantuml.project.time.Day;
 import net.sourceforge.plantuml.project.timescale.TimeScale;
 import net.sourceforge.plantuml.real.Real;
 import net.sourceforge.plantuml.style.ClockwiseTopRightBottomLeft;
-import net.sourceforge.plantuml.style.ISkinParam;
 import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.style.StyleBuilder;
+import net.sourceforge.plantuml.style.StyleSignature;
 import net.sourceforge.plantuml.style.StyleSignatureBasic;
 
 public class TaskDrawGroup extends AbstractTaskDraw {
 
 	private final Day end;
 
-	private final ISkinParam skinParam;
-
-	public TaskDrawGroup(TimeScale timeScale, Real y, String prettyDisplay, Day start, Day end, ISkinParam skinParam,
-			Task task, ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
-		super(timeScale, y, prettyDisplay, start, skinParam, task, toTaskDraw, styleBuilder);
-		this.skinParam = skinParam;
+	public TaskDrawGroup(TimeScale timeScale, Real y, String prettyDisplay, Day start, Day end, Task task,
+			ToTaskDraw toTaskDraw, StyleBuilder styleBuilder) {
+		super(timeScale, y, prettyDisplay, start, task, toTaskDraw, styleBuilder);
 		this.end = end;
 	}
 
@@ -122,7 +119,7 @@ public class TaskDrawGroup extends AbstractTaskDraw {
 	}
 
 	@Override
-	StyleSignatureBasic getStyleSignature() {
+	StyleSignature getStyleSignature() {
 		return StyleSignatureBasic.of(SName.root, SName.element, SName.ganttDiagram, SName.task);
 	}