diff --git a/src/gen/annotation/package-info.java b/src/gen/annotation/package-info.java
new file mode 100644
index 000000000..dc20670c9
--- /dev/null
+++ b/src/gen/annotation/package-info.java
@@ -0,0 +1,12 @@
+/**
+ * This package is part of Smetana:
+ * the internal port (from C
to Java
)
+ * of GraphViz/Dot
+ * in plantuml.
+ *
+ * @see h
+ * @see smetana.core
+ * @see net.sourceforge.plantuml.sdot
+ *
+ */
+package gen.annotation;
diff --git a/src/h/package-info.java b/src/h/package-info.java
index e39835fe6..dff6c2a46 100644
--- a/src/h/package-info.java
+++ b/src/h/package-info.java
@@ -4,7 +4,18 @@
* of GraphViz/Dot
* in plantuml.
*
+ *
+ * Port of the C header
(.h
) of Graphviz on Java:
+ *
EN
for enumeration
or enum
ST
for structure