Karin C's example

grammars/video/Weekday/weekday.gf

@@ -0,0 +1,15 @@
+abstract weekday = {
+
+cat
+Weekday ;
+
+fun
+--today : Weekday ;
+monday : Weekday ;
+tuesday : Weekday ;
+wednesday : Weekday ;
+thursday : Weekday ;
+friday : Weekday ;
+saturday : Weekday ;
+sunday : Weekday ;
+}