digraph {

Verbphrase [style = "solid", shape = "ellipse", URL = "Verbphrase.gf"];
Verbphrase -> Categories [style = "solid"];

Resource [style = "solid", shape = "ellipse", URL = "Resource.gf"];
Resource -> Rules [style = "solid"];
Resource -> Clause [style = "solid"];
Resource -> Structural [style = "solid"];

Rules [style = "solid", shape = "ellipse", URL = "Rules.gf"];
Rules -> Categories [style = "solid"];

Clause [style = "solid", shape = "ellipse", URL = "Clause.gf"];
Clause -> Categories [style = "solid"];

Structural [style = "solid", shape = "ellipse", URL = "Structural.gf"];
Structural -> Categories [style = "solid"];
Structural -> Numerals [style = "solid"];

Categories [style = "solid", shape = "ellipse", URL = "Categories.gf"];
Categories -> PredefAbs [style = "solid"];

PredefAbs [style = "solid", shape = "ellipse", URL = "PredefAbs.gf"];

Numerals [style = "solid", shape = "ellipse", URL = "Numerals.gf"];

}
