Merge pull request #1599 from The-Lum/ImproveDoc

docs: improve doc (JavaDoc, GH) [`package-info.java`, `readme.md`]

src/net/sourceforge/plantuml/abel/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides classes used to manage {@link Entity}.
+ *
+ * @see net.sourceforge.plantuml.plasma
+ */
+package net.sourceforge.plantuml.abel;

src/net/sourceforge/plantuml/abel/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `abel`
+
+## Description
+This package provides classes used to manage [`Entity`](./Entity.java).
+
+## Link
+
+## Reference
+
+## Credit
+
+## Misc.
+- [Abel _(on Wikipedia)_](https://en.wikipedia.org/wiki/Abel_(disambiguation))
+- [Niels Henrik Abel](https://en.wikipedia.org/wiki/Niels_Henrik_Abel)

src/net/sourceforge/plantuml/acearth/package-info.java

@@ -0,0 +1,8 @@
+/**
+ * Provides classes used to generate 
+ * <a href="https://plantuml.com/xearth" target="_top">
+ * XEarth Image</a>.
+ *
+ * @see ext.plantuml.com.ctreber.acearth
+ */
+package net.sourceforge.plantuml.acearth;

src/net/sourceforge/plantuml/acearth/readme.md

@@ -0,0 +1,20 @@
+# Directory Documentation for `acearth`
+
+## Description
+This package provides classes used to generate [XEarth Image](https://plantuml.com/xearth).
+
+The Java port of `XEarth` used in `PlantUML` is the [`AC.earth` of Christian Treber](../../../../ext/plantuml/com/ctreber/acearth/).
+
+## Link
+- [XEarth Image _(on `PlantUML`)_](https://plantuml.com/xearth)
+
+## Reference
+- [`xearth` of Kirk Lauritz Johnson](https://hewgill.com/xearth/original/)
+- [`xearth` for Windows of Greg Hewgill](https://hewgill.com/xearth/)
+
+## Credit
+- [`AC.earth` of Christian Treber](../../../../ext/plantuml/com/ctreber/acearth/)
+- [AC Earth _(on Web Archive)_](https://web.archive.org/web/20180428011447/http://www.acproductions.de/acearth)
+
+## Misc.
+- [Earth Day _(on Wikipedia)_](https://en.wikipedia.org/wiki/Earth_Day)

src/net/sourceforge/plantuml/activitydiagram/package-info.java

@@ -4,7 +4,7 @@
  * Activity Diagram (legacy)</a>.
  *
  * <p>
- * For new syntax see {@link net/sourceforge/plantuml/activitydiagram3}
+ * For new syntax see {@link net.sourceforge.plantuml.activitydiagram3}
  * and 
  * <a href="https://plantuml.com/activity-diagram-beta" target="_top">
  * Activity Diagram (New Syntax)</a>.

src/net/sourceforge/plantuml/annotation/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage Java User Annotation on PlantUML.
+ *
+ */
+package net.sourceforge.plantuml.annotation;

src/net/sourceforge/plantuml/annotation/readme.md

@@ -0,0 +1,6 @@
+# Directory Documentation for `annotation`
+
+## Description
+This package provides classes used to manage Java User Annotation on PlantUML.
+
+Currently use to identify 'DeadCode' with the `@DeadCode` Annotation.

src/net/sourceforge/plantuml/ant/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ant-task)" target="_top">
+ * PlantUML Ant task</a>.
+ *
+ */
+package net.sourceforge.plantuml.ant;

src/net/sourceforge/plantuml/ant/readme.md

@@ -5,5 +5,7 @@ This package provides classes used to manage [PlantUML Ant task](https://plantum
 
 ## Link
 - [PlantUML Ant task](https://plantuml.com/ant-task)
-- [Ant](https://ant.apache.org)
+
-- [Ant _(on Wikipedia)_](https://en.wikipedia.org/wiki/Apache_Ant)
+## Reference
+- [Apache Ant](https://ant.apache.org)
+- [Apache Ant _(on Wikipedia)_](https://en.wikipedia.org/wiki/Apache_Ant)

src/net/sourceforge/plantuml/argon2/package-info.java

@@ -0,0 +1,28 @@
+/**
+ * Provides classes used to manage the Password-Hashing Function nammed
+ * <a href="https://github.com/andreas1327250/argon2-java" target="_top">
+ * Argon2</a>.
+ *
+ * <p>
+ * The code is taken from:
+ * <ul>
+ *  <li><a href="https://github.com/andreas1327250/argon2-java" target="_top">
+ *  Andreas1327250/Argon2-java</a></li>
+ *  <li><a href="https://github.com/alphazero/Blake2b/" target="_top">
+ *  Alphazero/Blake2b/</a></li>
+ * </ul>
+ * </p>
+ * <p>
+ * <i>Ref.</i>:
+ * <ul>
+ *  <li><a href="https://github.com/P-H-C/phc-winner-argon2" target="_top">
+ *  P-H-C/PHC-winner-argon2</a></li>
+ *  <li><a href="https://www.password-hashing.net" target="_top">
+ *  Password Hashing Competition (PHC)</a></li>
+ * </ul>
+ * </p>
+ *
+ * @see net.sourceforge.plantuml.argon2.blake2
+ * 
+ */
+package net.sourceforge.plantuml.argon2;

src/net/sourceforge/plantuml/argon2/readme.md

@@ -0,0 +1,22 @@
+# Directory Documentation for `argon2`
+
+## Description
+This package provides classes used to manage the password-hashing function nammed [Argon2](https://github.com/andreas1327250/argon2-java).
+
+## Link
+- :octocat: [Andreas1327250/Argon2-java](https://github.com/andreas1327250/argon2-java)
+
+## Reference
+- [Argon2 _(on Wikipedia)_](https://en.wikipedia.org/wiki/Argon2)
+- [RFC 9106 (Argon2)](https://datatracker.ietf.org/doc/html/rfc9106)
+- :octocat: [P-H-C/PHC-winner-argon2](https://github.com/P-H-C/phc-winner-argon2)
+- [Password Hashing Competition (PHC)](https://www.password-hashing.net)
+- [BLAKE2](https://www.blake2.net)
+- [RFC 7693 (BLAKE2)](https://datatracker.ietf.org/doc/html/rfc7693)
+
+## Credit
+- :octocat: [Andreas1327250/Argon2-java](https://github.com/andreas1327250/argon2-java)
+- :octocat: [Alphazero/Blake2b](https://github.com/alphazero/Blake2b/)
+
+## Misc.
+

src/net/sourceforge/plantuml/asciiart/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ascii-art" target="_top">
+ * ASCII Art output format</a>.
+ *
+ */
+package net.sourceforge.plantuml.asciiart;

src/net/sourceforge/plantuml/asciiart/readme.md

@@ -0,0 +1,11 @@
+# Directory Documentation for `asciiart`
+
+## Description
+This package provides classes used to export diagram to an [ASCII Art](https://plantuml.com/ascii-art) output format.
+
+## Link
+- [ASCII Art Output Format](https://plantuml.com/ascii-art)
+- [ASCII Art _(on Wikipedia)_](https://en.wikipedia.org/wiki/ASCII_art)
+
+## Reference
+

src/net/sourceforge/plantuml/board/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="http://alphadoc.plantuml.com/doc/markdown/en/board-diagram" target="_top">
+ * Board Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.board;

src/net/sourceforge/plantuml/board/readme.md

@@ -0,0 +1,11 @@
+# Directory Documentation for `board`
+
+## Description
+This package provides classes used to manage [PlantUML Board Diagram](http://alphadoc.plantuml.com/doc/markdown/en/board-diagram).
+
+## Link
+- [Board Diagram _(on Alpha-doc)_](http://alphadoc.plantuml.com/doc/markdown/en/board-diagram)
+
+## Reference
+- [GH-423](https://github.com/plantuml/plantuml/issues/423)
+

src/net/sourceforge/plantuml/bpm/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="http://alphadoc.plantuml.com/doc/markdown/en/bpmn" target="_top">
+ * BPMN (Business Process Model and Notation) Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.bpm;

src/net/sourceforge/plantuml/bpm/readme.md

@@ -0,0 +1,16 @@
+# Directory Documentation for `bpm`
+
+## Description
+This package provides classes used to manage [PlantUML BPMN diagram](http://alphadoc.plantuml.com/doc/markdown/en/bpmn).
+
+## Link
+- [BPMN Diagram _(on Alpha-doc)_](http://alphadoc.plantuml.com/doc/markdown/en/bpmn)
+- [BPMN _(on Wikipedia)_](https://en.wikipedia.org/wiki/Business_Process_Model_and_Notation)
+
+## Reference
+- [QA-5647](https://forum.plantuml.net/5647/plans-for-bpmn-support)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/braille/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/en/command-line#458de91d76a8569c" target="_top">
+ * Braille output format</a>.
+ *
+ */
+package net.sourceforge.plantuml.braille;

src/net/sourceforge/plantuml/braille/readme.md

@@ -0,0 +1,11 @@
+# Directory Documentation for `braille`
+
+## Description
+This package provides classes used to export diagram to a [Braille](https://plantuml.com/en/command-line#458de91d76a8569c) output format.
+
+## Link
+- [PlantUML Braille Output Format](https://plantuml.com/en/command-line#458de91d76a8569c)
+
+## Reference
+- [QA-4752](https://forum.plantuml.net/4752/translate-class-diagram-to-braille)
+

src/net/sourceforge/plantuml/brotli/package-info.java

@@ -0,0 +1,18 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://github.com/google/brotli" target="_top">
+ * Brotli Compression Algorithm</a>.
+ *
+ * <p>
+ * The code is taken from:
+ * <ul>
+ *  <li><a href="https://github.com/google/brotli" target="_top">
+ *  Google/Brotli</a></li>
+ * </ul>
+ * </p>
+ * 
+ * @see net.sourceforge.plantuml.code.deflate
+ * @see net.sourceforge.plantuml.zopfli
+ * 
+ */
+package net.sourceforge.plantuml.brotli;

src/net/sourceforge/plantuml/brotli/readme.md

@@ -0,0 +1,18 @@
+# Directory Documentation for `brotli`
+
+## Description
+This package provides classes used to manage [Brotli Compression Algorithm](https://github.com/google/brotli).
+
+## Link
+- :octocat: [Google/Brotli](https://github.com/google/brotli)
+
+## Reference
+- [Brotli _(on Wikipedia)_](https://en.wikipedia.org/wiki/Brotli)
+- [RFC 7932](https://datatracker.ietf.org/doc/html/rfc7932)
+
+## Credit
+- :octocat: [Google/Brotli](https://github.com/google/brotli)
+
+## Misc.
+- [Brötchen _(on Wikipedia)_](https://de.wikipedia.org/wiki/Br%C3%B6tchen)
+- [Bread roll _(on Wikipedia)_](https://en.wikipedia.org/wiki/Bread_roll)

src/net/sourceforge/plantuml/classdiagram/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/class-diagram" target="_top">
+ * Class Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.classdiagram;

src/net/sourceforge/plantuml/classdiagram/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `classdiagram`
+
+## Description
+This package provides classes used to manage [PlantUML Class Diagram](https://plantuml.com/class-diagram).
+
+## Link
+- [Class Diagram](https://plantuml.com/class-diagram)
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/code/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage Coding and Compression.
+ *
+ * @see net.sourceforge.plantuml.brotli
+ * @see net.sourceforge.plantuml.code.deflate
+ * @see net.sourceforge.plantuml.zopfli
+ *
+ */
+package net.sourceforge.plantuml.code;

src/net/sourceforge/plantuml/code/readme.md

@@ -0,0 +1,19 @@
+# Directory Documentation for `code`
+
+## Description
+This package provides classes used to manage Coding and Compression.
+
+## Link
+- [`brotli`](../brotli/)
+- [`code.deflate`](./deflate/)
+- [`zopfli`](../zopfli/)
+
+## Reference
+- [Simple DEFLATE decompressor](https://www.nayuki.io/page/simple-deflate-decompressor)
+- [RFC 1951 (DEFLATE)](https://datatracker.ietf.org/doc/html/rfc1951)
+
+## Credit
+- :octocat: [Nayuki/Simple-DEFLATE-decompressor](https://github.com/nayuki/Simple-DEFLATE-decompressor)
+
+## Misc.
+

src/net/sourceforge/plantuml/command/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage
+ * <a href="https://plantuml.com/commons" target="_top">
+ * PlantUML End User Common Commands</a>.
+ * 
+ * @see net.sourceforge.plantuml.regex
+ *
+ */
+package net.sourceforge.plantuml.command;

src/net/sourceforge/plantuml/command/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `command`
+
+## Description
+This package provides classes used to manage [PlantUML End User Common Commands](https://plantuml.com/commons).
+
+## Link
+- [Common Commands in PlantUML](https://plantuml.com/commons)
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/cucadiagram/package-info.java

@@ -0,0 +1,16 @@
+/**
+ * Provides classes used to manage PlantUML Class-UseCase-Activity (CUCA) Diagram.
+ * 
+ * <p>
+ * The PlantUML CUCA Diagrams are:
+ * <ul>
+ *  <li><a href="https://plantuml.com/class-diagram" target="_top">
+ *  Class Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/use-case-diagram" target="_top">
+ *  Use Case Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/activity-diagram-legacy" target="_top">
+ *  Activity Diagram (legacy)</a>.</li>
+ * </ul>
+ * </p>
+ */
+package net.sourceforge.plantuml.cucadiagram;

src/net/sourceforge/plantuml/cucadiagram/readme.md

@@ -0,0 +1,8 @@
+# Directory Documentation for `cucadiagram`
+
+## Description
+This package provides classes used to manage PlantUML Class-UseCase-Activity (CUCA) Diagram:
+- [Class Diagram](https://plantuml.com/class-diagram)
+- [Use Case Diagram](https://plantuml.com/use-case-diagram)
+- [Activity Diagram (legacy)](https://plantuml.com/activity-diagram-legacy)
+

src/net/sourceforge/plantuml/dedication/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/dedication" target="_top">
+ * Dedication</a>.
+ *
+ */
+package net.sourceforge.plantuml.dedication;

src/net/sourceforge/plantuml/dedication/readme.md

@@ -0,0 +1,13 @@
+# Directory Documentation for `dedication`
+
+## Description
+This package provides classes used to manage [PlantUML Dedication](https://plantuml.com/dedication).
+
+## Link
+- [Dedication](https://plantuml.com/dedication)
+
+## Reference
+
+## Credit
+
+## Misc.

src/net/sourceforge/plantuml/definition/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/en/sources#dd263f8f99d9d776" target="_top">
+ * Definition Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.definition;

src/net/sourceforge/plantuml/definition/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `definition`
+
+## Description
+This package provides classes used to manage [PlantUML Definition Diagram](https://plantuml.com/en/sources#dd263f8f99d9d776).
+
+## Link
+
+## Reference
+- [QA-5769](https://forum.plantuml.net/5769/please-provide-way-include-blocks-code-from-file-into-itself)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/descdiagram/package-info.java

@@ -0,0 +1,22 @@
+/**
+ * Provides classes used to manage PlantUML Description Diagram.
+ * 
+ * <p>
+ * The PlantUML Description Diagrams are:
+ * <ul>
+ *  <li><a href="https://plantuml.com/use-case-diagram" target="_top">
+ *  Use Case Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/component-diagram" target="_top">
+ *  Component Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/deployment-diagram" target="_top">
+ *  Deployment Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/archimate-diagram" target="_top">
+ *  Archimate Diagram</a>;</li>
+ *  <li><a href="http://alphadoc.plantuml.com/doc/markdown/en/problem-diagram"
+ *  target="_top">Problem Diagram</a>;</li>
+ *  <li><a href="https://plantuml.com/object-diagram" target="_top">
+ *  Object Diagram</a>.</li>
+ * </ul>
+ * </p>
+ */
+package net.sourceforge.plantuml.descdiagram;

src/net/sourceforge/plantuml/descdiagram/readme.md

@@ -0,0 +1,19 @@
+# Directory Documentation for `descdiagram`
+
+## Description
+This package provides classes used to manage PlantUML Description Diagram:
+- [Use Case Diagram](https://plantuml.com/use-case-diagram)
+- [Component Diagram](https://plantuml.com/component-diagram)
+- [Deployment Diagram](https://plantuml.com/deployment-diagram)
+- [Archimate Diagram](https://plantuml.com/archimate-diagram)
+- [Problem Diagram](http://alphadoc.plantuml.com/doc/markdown/en/problem-diagram)
+- [Object Diagram](https://plantuml.com/object-diagram)
+
+## Reference
+- [Architecture description language _(on Wikipedia)_](https://en.wikipedia.org/wiki/Architecture_description_language)
+- [Software architecture description _(on Wikipedia)_](https://en.wikipedia.org/wiki/Software_architecture_description)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/directdot/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/dot" target="_top">
+ * Dot Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.directdot;

src/net/sourceforge/plantuml/directdot/readme.md

@@ -0,0 +1,15 @@
+# Directory Documentation for `directdot`
+
+## Description
+This package provides classes used to manage [PlantUML Dot Diagram](https://plantuml.com/dot).
+
+## Link
+- [Dot Diagram](https://plantuml.com/dot)
+
+## Reference
+- [Graphviz DOT Language](https://www.graphviz.org/doc/info/lang.html)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/ditaa/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ditaa" target="_top">
+ * Ditaa Diagram</a>.
+ *
+ * @see org.stathissideris.ascii2image.graphics
+ * 
+ */
+package net.sourceforge.plantuml.ditaa;

src/net/sourceforge/plantuml/ditaa/readme.md

@@ -0,0 +1,16 @@
+# Directory Documentation for `ditaa`
+
+## Description
+This package provides classes used to manage [PlantUML Ditaa Diagram](https://plantuml.com/ditaa).
+
+## Link
+- [Ditaa Diagram](https://plantuml.com/ditaa)
+
+## Reference
+
+## Credit
+- [`org.stathissideris.ascii2image`](../../../../org/stathissideris/ascii2image) _(included in PlantUML)_
+- :octocat: [stathissideris/ditaa](https://github.com/stathissideris/ditaa)
+
+## Misc.
+

src/net/sourceforge/plantuml/donors/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/donors" target="_top">
+ * Donors</a> and
+ * <a href="https://plantuml.com/skinparam" target="_top">
+ * Skinparameter</a> Lists.
+ *
+ */
+package net.sourceforge.plantuml.donors;

src/net/sourceforge/plantuml/donors/readme.md

@@ -0,0 +1,17 @@
+# Directory Documentation for `donors`
+
+## Description
+This package provides classes used to manage:
+- [PlantUML Donors List](https://plantuml.com/donors)
+- [PlantUML Skinparameter List](https://plantuml.com/skinparam)
+
+## Link
+- [PlantUML Donors](https://plantuml.com/donors)
+- [PlantUML Skinparameter](https://plantuml.com/skinparam)
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/dot/package-info.java

@@ -0,0 +1,11 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/graphviz-dot" target="_top">
+ * Graphviz dot</a> for layout engine.
+ * 
+ * @see net.sourceforge.plantuml.elk
+ * @see net.sourceforge.plantuml.sdot
+ * @see net.sourceforge.plantuml.vizjs
+ * 
+ */
+package net.sourceforge.plantuml.dot;

src/net/sourceforge/plantuml/dot/readme.md

@@ -0,0 +1,23 @@
+# Directory Documentation for `dot`
+
+## Description
+This package provides classes used to export diagram with the [Graphviz dot](https://plantuml.com/graphviz-dot) layout engine.
+
+## Link
+- [Graphviz dot](https://plantuml.com/graphviz-dot)
+
+## Reference
+- [Graphviz](https://graphviz.org)
+- [Graphviz _(on GitLab)_](https://gitlab.com/graphviz/graphviz/)
+
+## See also other engines
+- [PlantUML 'Eclipse Layout Kernel (ELK)' Engine](https://plantuml.com/elk)
+  - [`elk/proxy`](./proxy/) _(included in PlantUML)_
+- [Smetana _(internal port of GraphViz in plantuml)_](https://plantuml.com/smetana02) and :octocat: [plantuml/smetana](https://github.com/plantuml/smetana)
+  - [`plantuml/sdot`](../sdot/)
+  - [`src/gen`](../../../../gen)
+  - [`src/smetana/core`](../../../../smetana/core)
+  - [`src/h`](../../../../h)
+- [PlantUML Vizjs _(a port to Javascript of GraphViz)_](https://plantuml.com/vizjs)
+  - [`plantuml/vizjs`](../vizjs/) _(included in PlantUML)_
+  - :octocat: [Plantuml/Vizjs](https://github.com/plantuml/vizjs) _(not included in `plantuml/plantuml`)_

src/net/sourceforge/plantuml/ebnf/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ebnf" target="_top">
+ * EBNF (Extended Backus–Naur Form) Diagram</a>.
+ *
+ * @see net.sourceforge.plantuml.regexdiagram
+ * 
+ */
+package net.sourceforge.plantuml.ebnf;

src/net/sourceforge/plantuml/ebnf/readme.md

@@ -0,0 +1,23 @@
+# Directory Documentation for `ebnf`
+
+## Description
+This package provides classes used to manage [Extended Backus–Naur Form (EBNF) Diagram](https://plantuml.com/ebnf).
+
+## Link
+- [Extended Backus–Naur Form (EBNF) Diagram](https://plantuml.com/ebnf)
+
+## Reference
+### Internal Reference
+- [QA-16529](https://forum.plantuml.net/16529/could-we-add-syntax-diagrams)
+
+### External Reference
+- [Syntax diagram _(on Wikipedia)_](https://en.wikipedia.org/wiki/Syntax_diagram)
+- [Extended Backus–Naur Form (EBNF) _(on Wikipedia)_](https://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_form)
+- [ISO/IEC 14977 : 1996(E)](http://www.cl.cam.ac.uk/~mgk25/iso-14977.pdf)
+
+## See also
+- [PlantUML Regular expression (Regex) Diagram](https://plantuml.com/regex)
+- [`regexdiagram`](../regexdiagram/) _(directory on plantuml)_
+
+## Misc.
+- [Shunting yard algorithm](https://en.wikipedia.org/wiki/Shunting_yard_algorithm)

src/net/sourceforge/plantuml/eggs/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage PlantUML Easter Eggs.
+ *
+ */
+package net.sourceforge.plantuml.eggs;

src/net/sourceforge/plantuml/eggs/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `eggs`
+
+## Description
+This package provides classes used to manage PlantUML Easter Eggs.
+
+## Link
+
+## Reference
+- [Easter egg _(on Wikipedia)_](https://en.wikipedia.org/wiki/Easter_egg_(media))
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/elk/package-info.java

@@ -0,0 +1,12 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/elk" target="_top">
+ * Eclipse Layout Kernel (ELK)</a> for layout engine.
+ *
+ * @see net.sourceforge.plantuml.elk.proxy
+ * @see net.sourceforge.plantuml.dot
+ * @see net.sourceforge.plantuml.sdot
+ * @see net.sourceforge.plantuml.vizjs
+ * 
+ */
+package net.sourceforge.plantuml.elk;

src/net/sourceforge/plantuml/elk/readme.md

@@ -0,0 +1,27 @@
+# Directory Documentation for `elk`
+
+## Description
+This package provides classes used to export diagram with the [Eclipse Layout Kernel (ELK)](https://plantuml.com/elk) layout engine.
+
+## Link
+- [PlantUML 'Eclipse Layout Kernel (ELK)' Engine](https://plantuml.com/elk)
+
+## Reference
+- [Eclipse Layout Kernel (ELK)](https://eclipse.dev/elk/)
+- [ELK Documentation](https://eclipse.dev/elk/documentation.html)
+
+## Credit
+- [`elk/proxy`](./proxy/) _(included in PlantUML)_
+- :octocat: [eclipse/elk](https://github.com/eclipse/elk)
+
+## See also other engines
+- [GraphViz dot](https://plantuml.com/graphviz-dot)
+  - [`plantuml/dot`](../dot/)
+- [Smetana _(internal port of GraphViz in plantuml)_](https://plantuml.com/smetana02) and :octocat: [plantuml/smetana](https://github.com/plantuml/smetana)
+  - [`plantuml/sdot`](../sdot/)
+  - [`src/gen`](../../../../gen)
+  - [`src/smetana/core`](../../../../smetana/core)
+  - [`src/h`](../../../../h)
+- [PlantUML Vizjs _(a port to Javascript of GraphViz)_](https://plantuml.com/vizjs)
+  - [`plantuml/vizjs`](../vizjs/) _(included in PlantUML)_
+  - :octocat: [Plantuml/Vizjs](https://github.com/plantuml/vizjs) _(not included in `plantuml/plantuml`)_

src/net/sourceforge/plantuml/emoji/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/en/creole#68305e25f5788db0" target="_top">
+ * PlantUML Emoji</a> icon set.
+ *
+ * @see net.sourceforge.plantuml.openiconic
+ * 
+ */
+package net.sourceforge.plantuml.emoji;

src/net/sourceforge/plantuml/emoji/readme.md

@@ -0,0 +1,10 @@
+# Directory Documentation for `emoji`
+
+## Description
+This package provides classes used to manage [PlantUML Emoji](https://plantuml.com/en/creole#68305e25f5788db0) icon set.
+
+## Link
+- [PlantUML Emoji](https://plantuml.com/en/creole#68305e25f5788db0) icon set
+
+## Credit
+- :octocat: [EmojiTwo/emojitwo](https://github.com/EmojiTwo/emojitwo)

src/net/sourceforge/plantuml/error/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage Error.
+ *
+ */
+package net.sourceforge.plantuml.error;

src/net/sourceforge/plantuml/error/readme.md

@@ -0,0 +1,4 @@
+# Directory Documentation for `error`
+
+## Description
+This package provides classes used to manage Error.

src/net/sourceforge/plantuml/file/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage Folder and File.
+ *
+ * @see net.sourceforge.plantuml.security.SFile
+ *
+ */
+package net.sourceforge.plantuml.file;

src/net/sourceforge/plantuml/file/readme.md

@@ -0,0 +1,4 @@
+# Directory Documentation for `file`
+
+## Description
+This package provides classes used to manage Folder and File.

src/net/sourceforge/plantuml/filesdiagram/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="http://alphadoc.plantuml.com/doc/markdown/en/files-diagram" target="_top">
+ * [Tree] Files diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.filesdiagram;

src/net/sourceforge/plantuml/filesdiagram/readme.md

@@ -0,0 +1,15 @@
+# Directory Documentation for `filesdiagram`
+
+## Description
+This package provides classes used to manage [[Tree] Files diagram](http://alphadoc.plantuml.com/doc/markdown/en/files-diagram).
+
+## Link
+- [[Tree] Files diagram _(on alpha-doc)_](http://alphadoc.plantuml.com/doc/markdown/en/files-diagram)
+
+## Reference
+- [GH-1448](https://github.com/plantuml/plantuml/issues/1448)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/flashcode/package-info.java

@@ -0,0 +1,8 @@
+/**
+ * Provides classes used to manage 
+ * Flashcode especially QR Code (on PlantUML).
+ *
+ * @see ext.plantuml.com.google.zxing
+ * @see net.sourceforge.plantuml.klimt.creole.atom.AtomImg#createQrcode
+ */
+package net.sourceforge.plantuml.flashcode;

src/net/sourceforge/plantuml/flashcode/readme.md

@@ -0,0 +1,15 @@
+# Directory Documentation for `flashcode`
+
+## Description
+This package provides classes used to manage Flashcode especially QR Code (on PlantUML).
+
+## Reference
+- [Barcode _(on Wikipedia)_](https://en.wikipedia.org/wiki/Barcode)
+- [QR code _(on Wikipedia)_](https://en.wikipedia.org/wiki/QR_code)
+
+## Credit
+- [`com.google.zxing`](../../../../ext/plantuml/com/google/zxing/) _(included in PlantUML)_
+- :octocat: [zxing/zxing](https://github.com/zxing/zxing)
+
+## Misc.
+- [Flashcode _(on Wikipedia)_](https://fr.wikipedia.org/wiki/Flashcode) [fr]

src/net/sourceforge/plantuml/font/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/font" target="_top">
+ * Font list</a>.
+ *
+ */
+package net.sourceforge.plantuml.font;

src/net/sourceforge/plantuml/font/readme.md

@@ -0,0 +1,4 @@
+# Directory Documentation for `font`
+
+## Description
+This package provides classes used to manage [Font List](https://plantuml.com/font).

src/net/sourceforge/plantuml/ftp/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ftp" target="_top">
+ * FTP server</a>.
+ *
+ */
+package net.sourceforge.plantuml.ftp;

src/net/sourceforge/plantuml/ftp/readme.md

@@ -0,0 +1,13 @@
+# Directory Documentation for `ftp`
+
+## Description
+This package provides classes used to manage a [FTP](https://plantuml.com/ftp) server.
+
+## Link
+- [PlantUML FTP server](https://plantuml.com/ftp)
+
+## Reference
+- [QA-9235](https://forum.plantuml.net/9235/unexpected-ftp-session)
+
+## Reference
+- [File Transfer Protocol _(on Wikipedia)_](https://en.wikipedia.org/wiki/File_Transfer_Protocol)

src/net/sourceforge/plantuml/fun/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides classes used to manage 
+ * PlantUML Fun icon set.
+ *
+ */
+package net.sourceforge.plantuml.fun;

src/net/sourceforge/plantuml/fun/readme.md

@@ -0,0 +1,4 @@
+# Directory Documentation for `fun`
+
+## Description
+This package provides classes used to manage Fun icon or sprite set.

src/net/sourceforge/plantuml/gitlog/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="http://alphadoc.plantuml.com/doc/markdown/en/git-diagram" target="_top">
+ * Commits Git Log Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.gitlog;

src/net/sourceforge/plantuml/gitlog/readme.md

@@ -0,0 +1,12 @@
+# Directory Documentation for `gitlog`
+
+## Description
+This package provides classes used to manage [PlantUML Commits Git Log Diagram Diagram](http://alphadoc.plantuml.com/doc/markdown/en/git-diagram).
+
+## Link
+- [PlantUML Commits Git Log Diagram Diagram _(on Alpha-doc)_](http://alphadoc.plantuml.com/doc/markdown/en/git-diagram)
+
+## Reference
+- [QA-13557](https://forum.plantuml.net/13557/support-for-the-different-%40start-commands)
+- [GH-493](https://github.com/plantuml/plantuml/pull/493)
+

src/net/sourceforge/plantuml/graphml/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage Graphml output format.
+ *
+ */
+package net.sourceforge.plantuml.graphml;

src/net/sourceforge/plantuml/graphml/readme.md

@@ -0,0 +1,16 @@
+# Directory Documentation for `graphml`
+
+## Description
+This package provides classes used to export diagram to a Graphml output format.
+
+## Link
+- https://github.com/plantuml/plantuml/commit/a195b4e842b6775ea80a79f43218a0e9c905e406
+- [`graphml` search results on `plantuml/plantuml`](https://github.com/search?q=repo%3Aplantuml%2Fplantuml+graphml&type=code)
+- [QA-5307](https://forum.plantuml.net/5307/export-to-graphml)
+
+## Reference
+- [GraphML _(on Wikipedia)_](https://en.wikipedia.org/wiki/GraphML)
+
+
+## See also
+- ["Generic Model Export" on `graphml` branch](https://github.com/plantuml/plantuml/blob/graphml/src/net/sourceforge/plantuml/graphml/docs/overview.md)

src/net/sourceforge/plantuml/hcl/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="http://alphadoc.plantuml.com/doc/markdown/en/hcl" target="_top">
+ * HCL diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.hcl;

src/net/sourceforge/plantuml/hcl/readme.md

@@ -0,0 +1,15 @@
+# Directory Documentation for `hcl`
+
+## Description
+This package provides classes used to manage [PlantUML HCL Diagram](http://alphadoc.plantuml.com/doc/markdown/en/hcl).
+
+## Link
+- [HCL Diagram _(on alpha-doc)_](http://alphadoc.plantuml.com/doc/markdown/en/hcl)
+
+## Reference
+- [QA-17357](https://forum.plantuml.net/17357/documentation-of-hcl-and-regex)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/help/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage Help list.
+ *
+ */
+package net.sourceforge.plantuml.help;

src/net/sourceforge/plantuml/help/readme.md

@@ -0,0 +1,18 @@
+# Directory Documentation for `help`
+
+## Description
+This package provides classes used to manage:
+- `help color`
+- `help font`
+- `help keyword`
+- `help theme`
+- `help type`
+
+## Link
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/html/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/en/command-line#458de91d76a8569c" target="_top">
+ * HTML output format</a>.
+ *
+ */
+package net.sourceforge.plantuml.html;

src/net/sourceforge/plantuml/html/readme.md

@@ -0,0 +1,9 @@
+# Directory Documentation for `html`
+
+## Description
+This package provides classes used to export diagram to a [HTML](https://plantuml.com/en/command-line#458de91d76a8569c) output format.
+
+## Link
+- [PlantUML HTML Output Format](https://plantuml.com/en/command-line#458de91d76a8569c)
+
+## Reference

src/net/sourceforge/plantuml/jcckit/package-info.java

@@ -0,0 +1,8 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/jcckit" target="_top">
+ * Jcckit Diagram</a>.
+ *
+ * @see jcckit
+ */
+package net.sourceforge.plantuml.jcckit;

src/net/sourceforge/plantuml/jcckit/readme.md

@@ -0,0 +1,19 @@
+# Directory Documentation for `jcckit`
+
+## Description
+This package provides classes used to manage [PlantUML JCCKit Diagram](https://plantuml.com/jcckit).
+
+## Link
+- [JCCKit Diagram](https://plantuml.com/jcckit)
+
+## Reference
+- [JCCKit _(on Sourceforge)_](https://jcckit.sourceforge.net)
+- [JCCKit User Guide](https://jcckit.sourceforge.net/UserGuide/index.html)
+- [JCCKit Examples](https://jcckit.sourceforge.net/examples.html)
+
+## Credit
+- [`src/jcckit`](../../../../jcckit/) _(included in PlantUML)_
+- [JCCKit _(on Sourceforge)_](https://jcckit.sourceforge.net)
+
+## Misc.
+

src/net/sourceforge/plantuml/json/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage JSON Data (with the minimal-json API).
+ *
+ * @see <a href="https://github.com/ralfstx/minimal-json" target="_top">
+ * Minimal-json API</a>
+ */
+package net.sourceforge.plantuml.json;

src/net/sourceforge/plantuml/json/readme.md

@@ -0,0 +1,16 @@
+# Directory Documentation for `json`
+
+## Description
+This package provides classes used to manage [JSON](https://www.json.org) Data _(with the [minimal-json API](https://github.com/ralfstx/minimal-json))_.
+
+## Link
+
+## Reference
+- [JSON _(on Wikipedia)_](https://en.wikipedia.org/wiki/JSON)
+
+## Credit
+- :octocat: [ralfstx/minimal-json](https://github.com/ralfstx/minimal-json)
+- [`json`](../json/) _(included in PlantUML)_
+
+## Misc.
+

src/net/sourceforge/plantuml/jsondiagram/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/json" target="_top">
+ * JSON Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.jsondiagram;

src/net/sourceforge/plantuml/jsondiagram/readme.md

@@ -0,0 +1,14 @@
+# Directory Documentation for `jsondiagram`
+
+## Description
+This package provides classes used to manage [PlantUML JSON Diagram](https://plantuml.com/json).
+
+## Link
+- [JSON Diagram](https://plantuml.com/json)
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/log/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * Provides classes used to manage Log and Logging.
+ * 
+ */
+package net.sourceforge.plantuml.log;

src/net/sourceforge/plantuml/log/readme.md

@@ -0,0 +1,4 @@
+# Directory Documentation for `log`
+
+## Description
+This package provides classes used to manage Log and Logging.

src/net/sourceforge/plantuml/math/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/ascii-math" target="_top">
+ * ASCII Math format</a>.
+ *
+ */
+package net.sourceforge.plantuml.math;

src/net/sourceforge/plantuml/math/readme.md

@@ -0,0 +1,20 @@
+# Directory Documentation for `math`
+
+## Description
+This package provides classes used to manage [PlantUML ASCII Math](https://plantuml.com/ascii-math) format.
+
+## Link
+- [PlantUML ASCII Math Format](https://plantuml.com/ascii-math)
+
+## Reference
+- [Ascii Math](http://asciimath.org)
+- [JLaTeXMath](https://scilab.gitlab.io/legacy_wiki/JLaTeXMath)
+
+## Credit
+- :octocat: [Asciimath/Asciimathml](https://github.com/asciimath/asciimathml/tree/master/asciimath-based)
+- [`ASCIIMathTeXImg.java`](./ASCIIMathTeXImg.java) is an internal port of [`ASCIIMathTeXImg.js`](https://github.com/asciimath/asciimathml/blob/master/asciimath-based/ASCIIMathTeXImg.js)
+- :octocat: [Opencollab/Jlatexmath](https://github.com/opencollab/jlatexmath)
+
+## Dependency _(if available)_
+- `org.scilab.forge.jlatexmath`
+- `org.apache.batik`

src/net/sourceforge/plantuml/mindmap/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/mindmap-diagram" target="_top">
+ * Mindmap Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.mindmap;

src/net/sourceforge/plantuml/mindmap/readme.md

@@ -0,0 +1,15 @@
+# Directory Documentation for `mindmap`
+
+## Description
+This package provides classes used to manage [PlantUML Mindmap Diagram](https://plantuml.com/mindmap-diagram).
+
+## Link
+- [Mindmap Diagram](https://plantuml.com/mindmap-diagram)
+
+## Reference
+- [Mind map _(on Wikipedia)_](https://en.wikipedia.org/wiki/Mind_map)
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/nwdiag/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/nwdiag" target="_top">
+ * Network Diagram (nwdiag)</a>.
+ *
+ */
+package net.sourceforge.plantuml.nwdiag;

src/net/sourceforge/plantuml/nwdiag/readme.md

@@ -0,0 +1,17 @@
+# Directory Documentation for `nwdiag`
+
+## Description
+This package provides classes used to manage [PlantUML Network Diagram (nwdiag)](https://plantuml.com/nwdiag).
+
+## Link
+- [Network Diagram (nwdiag)](https://plantuml.com/nwdiag)
+
+## Reference
+- [Computer network diagram _(on Wikipedia)_](https://en.wikipedia.org/wiki/Computer_network_diagram)
+
+## Credit or Inspiration
+- [`nwdiag` of Takeshi Komiya](http://blockdiag.com/en/nwdiag/nwdiag-examples.html)
+- :octocat: [ Blockdiag/Nwdiag](https://github.com/blockdiag/nwdiag)
+
+## Misc.
+

src/net/sourceforge/plantuml/objectdiagram/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/object-diagram" target="_top">
+ * Object (object, map, json) Diagram</a>.
+ *
+ */
+package net.sourceforge.plantuml.objectdiagram;

src/net/sourceforge/plantuml/objectdiagram/readme.md

@@ -0,0 +1,17 @@
+# Directory Documentation for `objectdiagram`
+
+## Description
+This package provides classes used to manage [PlantUML Object Diagram](https://plantuml.com/object-diagram):
+- `object`
+- `map`
+- `json`
+
+## Link
+- [Object Diagram](https://plantuml.com/object-diagram)
+
+## Reference
+
+## Credit
+
+## Misc.
+

src/net/sourceforge/plantuml/openiconic/package-info.java

@@ -0,0 +1,9 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/openiconic" target="_top">
+ * PlantUML Openiconic</a> icon set.
+ *
+ * @see net.sourceforge.plantuml.emoji
+ * 
+ */
+package net.sourceforge.plantuml.openiconic;

src/net/sourceforge/plantuml/openiconic/readme.md

@@ -0,0 +1,10 @@
+# Directory Documentation for `openiconic`
+
+## Description
+This package provides classes used to manage [PlantUML Openiconic](https://plantuml.com/openiconic) icon set.
+
+## Link
+- [PlantUML Openiconic](https://plantuml.com/openiconic) icon set
+
+## Credit
+- :octocat: [Iconic/Open-iconic](https://github.com/iconic/open-iconic)

src/net/sourceforge/plantuml/oregon/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/oregon-trail" target="_top">
+ * The Oregon Trail Game</a> on PlantUML.
+ *
+ */
+package net.sourceforge.plantuml.oregon;

src/net/sourceforge/plantuml/oregon/readme.md

@@ -0,0 +1,16 @@
+# Directory Documentation for `oregon`
+
+## Description
+This package provides classes used to play [The Oregon Trail Game](https://plantuml.com/oregon-trail) on PlantUML.
+
+## Link
+- [The Oregon Trail Game](https://plantuml.com/oregon-trail)
+
+## Reference
+- [The Oregon Trail _(on Wikipedia)_](https://en.wikipedia.org/wiki/The_Oregon_Trail_%28series%29)
+
+## Credit or Inspiration
+- [`Westward Ho!` of David Ahl](http://www.atariarchives.org/bca/Chapter02_WestwardHo.php)
+
+## Misc.
+

src/net/sourceforge/plantuml/pdf/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/pdf" target="_top">
+ * PDF output format</a>.
+ *
+ */
+package net.sourceforge.plantuml.pdf;

src/net/sourceforge/plantuml/pdf/readme.md

@@ -0,0 +1,10 @@
+# Directory Documentation for `pdf`
+
+## Description
+This package provides classes used to export diagram to a [PDF](https://plantuml.com/pdf) output format.
+
+## Link
+- [PDF](https://plantuml.com/pdf)
+
+## Reference
+- [PDF _(on Wikipedia)_](https://en.wikipedia.org/wiki/PDF)

src/net/sourceforge/plantuml/picoweb/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/picoweb" target="_top">
+ * PlantUML PicoWeb Server</a>.
+ *
+ */
+package net.sourceforge.plantuml.picoweb;

src/net/sourceforge/plantuml/picoweb/readme.md

@@ -0,0 +1,18 @@
+# Directory Documentation for `picoweb`
+
+## Description
+This package provides classes used to manage a [PlantUML PicoWeb Server](https://plantuml.com/picoweb).
+
+## Link
+- [PlantUML PicoWeb server](https://plantuml.com/picoweb)
+
+## Reference
+
+## Credit or Inspiration
+- ["Create a simple HTTP Web Server in Java"](https://www.ssaurel.com/blog/create-a-simple-http-web-server-in-java) on the [Sylvain Saurel Blog](https://www.ssaurel.com/blog/)
+- [`JavaHTTPServer.java` of Sylvain Saurel](https://gist.github.com/ssaurel/2e8462d70b9e61c4dd6df2dc2cd725d7)
+ (on a [@ssaurel's gist](https://gist.github.com/ssaurel))
+
+ ## Misc.
+- [`pico` on "Metric prefix"  _(on Wikipedia)_](https://en.wikipedia.org/wiki/Metric_prefix)
+- [`pico-` on "Orders of magnitude" _(on Wikipedia)_](https://en.wikipedia.org/wiki/Orders_of_magnitude_(numbers)#10%E2%88%9212)

src/net/sourceforge/plantuml/png/package-info.java

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+/**
+ * Provides classes used to manage 
+ * <a href="https://plantuml.com/en/command-line#458de91d76a8569c" target="_top">
+ * PNG output format</a>.
+ *
+ */
+package net.sourceforge.plantuml.png;