tram with new API

examples/tram/TramEng.gf

@@ -0,0 +1,5 @@
+--# -path=.:resource-1.0/abstract:resource-1.0/common:resource-1.0/multimodal:resource-1.0/english:prelude
+
+concrete TramEng of Tram = TramI with 
+  (Multimodal = MultimodalEng),
+  (Math = MathEng) ;