gf-book web page index and toc

gf-book/examples/chapter8/GeometryEng.gf

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+--# -path=.:present
+
+concrete GeometryEng of Geometry = LogicEng ** 
+  open SyntaxEng, ParadigmsEng in {
+lin
+  Line = mkCN (mkN "line") ;
+  Point = mkCN (mkN "point") ; 
+  Circle = mkCN (mkN "circle") ;
+  Intersect = pred (mkV2 "intersect") ;
+  Parallel = pred (mkA2 (mkA "parallel") (mkPrep "to")) ;
+  Vertical = pred (mkA "vertical") ;
+  Centre = app (mkN2 (mkN "centre") (mkPrep "of")) ;
+}