gf-book web page index and toc

gf-book/examples/chapter6/AggregationEng.gf

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+concrete AggregationEng of Aggregation = {
+
+lincat S, NP, VP = Str ;
+
+lin 
+  PredVP x y = x ++ y ;
+  ConjS  a b = a ++ "or" ++ b ;
+  ConjVP a b = a ++ "or" ++ b ;
+  ConjNP a b = a ++ "or" ++ b ;
+
+  Run = "runs" ;
+  Walk = "walks" ;
+  John = "John" ;
+  Mary = "Mary" ;
+
+}
+