diff --git a/lib/resource-1.0/doc/Resource-HOWTO.txt b/lib/resource-1.0/doc/Resource-HOWTO.txt
index 6f8da1c46..fff5f439f 100644
--- a/lib/resource-1.0/doc/Resource-HOWTO.txt
+++ b/lib/resource-1.0/doc/Resource-HOWTO.txt
@@ -35,10 +35,24 @@ This document concerns the API v. 1.0. You can find the current code in
 
 
 
-==The resource grammar API==
+==The resource grammar structure==
 
-The API is divided into a bunch of ``interface`` and ``resource`` modules.
-The following figure gives the dependencies of these modules.
+The library is divided into a bunch of modules, whose dependencies
+are given in the following figure.
+
+[Syntax.png] 
+
+- solid contours: module used by end users
+- dashed contours: internal module
+- ellipse: abstract/concrete pair of modules
+- rectangle: resource or instance
+- diamond: interface
+
+
+The solid ellipses show the API as visible to the user of the library. The
+dashed ellipses form the main of the implementation, on which the resource
+grammar programmer has to work with. With the exception of the ``Paradigms``
+module, the visible API modules can be produced mechanically.
 
 [Grammar.png] 
 
diff --git a/lib/resource-1.0/doc/Syntax.dot b/lib/resource-1.0/doc/Syntax.dot
new file mode 100644
index 000000000..a7081660e
--- /dev/null
+++ b/lib/resource-1.0/doc/Syntax.dot
@@ -0,0 +1,111 @@
+digraph {
+
+size = "12,8" ;
+
+German   [style = "solid", shape = "ellipse"];
+ExtraGer [style = "solid", shape = "ellipse"];
+IrregGer [style = "solid", shape = "ellipse"];
+
+German -> IrregGer [style = "solid"];
+German -> ExtraGer [style = "solid"];
+German -> LangGer [style = "solid"];
+IrregGer -> ParadigmsGer [style = "solid"];
+ExtraGer -> Grammar [style = "solid"];
+
+TryGer [style = "solid", shape = "rectangle"];
+
+LangGer [style = "solid", shape = "ellipse"];
+
+TryGer -> SyntaxGer [style = "solid"];
+
+TryGer -> ParadigmsGer [style = "solid"];
+
+TryGer -> Lexicon [style = "solid"];
+
+LangGer -> Grammar [style = "solid"];
+LangGer -> Lexicon [style = "solid"];
+
+Lexicon [style = "dashed", shape = "ellipse", URL = "Lang.gf"];
+
+SyntaxGer [style = "solid", shape = "rectangle"];
+
+SyntaxGer -> Syntax [style = "solid"];
+
+ParadigmsGer [style = "solid", shape = "rectangle"];
+
+Syntax [style = "solid", shape = "diamond"];
+
+Syntax -> Grammar [style = "solid"];
+Syntax -> Constructors [style = "solid"];
+ParadigmsGer -> Grammar [style = "solid"];
+
+Constructors [style = "dashed", shape = "ellipse", URL = "Lang.gf"];
+
+Constructors -> Grammar [style = "solid"];
+
+Grammar [style = "dashed", shape = "ellipse", URL = "Lang.gf"];
+
+
+Grammar -> Noun [style = "solid"];
+Grammar -> Verb [style = "solid"];
+Grammar -> Adjective [style = "solid"];
+Grammar -> Adverb [style = "solid"];
+Grammar -> Numeral [style = "solid"];
+Grammar -> Sentence [style = "solid"];
+Grammar -> Question [style = "solid"];
+Grammar -> Relative [style = "solid"];
+Grammar -> Conjunction [style = "solid"];
+Grammar -> Phrase [style = "solid"];
+Grammar -> Text [style = "solid"];
+Grammar -> Idiom [style = "solid"];
+Grammar -> Structural [style = "solid"];
+
+
+Noun [style = "dashed", shape = "ellipse", URL = "Noun.gf"];
+Noun -> Cat [style = "solid"];
+
+Verb [style = "dashed", shape = "ellipse", URL = "Verb.gf"];
+Verb -> Cat [style = "solid"];
+
+Adjective [style = "dashed", shape = "ellipse", URL = "Adjective.gf"];
+Adjective -> Cat [style = "solid"];
+
+Adverb [style = "dashed", shape = "ellipse", URL = "Adverb.gf"];
+Adverb -> Cat [style = "solid"];
+
+Numeral [style = "dashed", shape = "ellipse", URL = "Numeral.gf"];
+Numeral -> Cat [style = "solid"];
+
+Sentence [style = "dashed", shape = "ellipse", URL = "Sentence.gf"];
+Sentence -> Cat [style = "solid"];
+
+Question [style = "dashed", shape = "ellipse", URL = "Question.gf"];
+Question -> Cat [style = "solid"];
+
+Relative [style = "dashed", shape = "ellipse", URL = "Relative.gf"];
+Relative -> Cat [style = "solid"];
+
+Conjunction [style = "dashed", shape = "ellipse", URL = "Conjunction.gf"];
+Conjunction -> Cat [style = "solid"];
+
+Phrase [style = "dashed", shape = "ellipse", URL = "Phrase.gf"];
+Phrase -> Cat [style = "solid"];
+
+Text [style = "dashed", shape = "ellipse", URL = "Phrase.gf"];
+Text -> Cat [style = "solid"];
+
+Idiom [style = "dashed", shape = "ellipse", URL = "Phrase.gf"];
+Idiom -> Cat [style = "solid"];
+
+Structural [style = "dashed", shape = "ellipse", URL = "Structural.gf"];
+Structural -> Cat [style = "solid"];
+
+#Lexicon [style = "dashed", shape = "ellipse", URL = "Lexicon.gf"];
+#Lexicon -> Cat [style = "solid"];
+
+Cat [style = "dashed", shape = "ellipse", URL = "Cat.gf"];
+Cat -> Common [style = "solid"];
+
+Common [style = "dashed", shape = "ellipse", URL = "Tense.gf"];
+
+}
diff --git a/lib/resource-1.0/doc/Syntax.png b/lib/resource-1.0/doc/Syntax.png
new file mode 100644
index 000000000..1cc8161b1
Binary files /dev/null and b/lib/resource-1.0/doc/Syntax.png differ