-s ::= !ws Grammar ws => "gram"
-Grammar ::= NonTerminal +/ ws => "grammar"
-NonTerminal ::= word ^"::=" RHS /ws
+s = !ws Grammar ws => "gram"
+Grammar = NonTerminal +/ ws => "grammar"
+NonTerminal = word !wp ^"=" !wp RHS
+
+RHS = (Conjuncts +/ (!ws "|" !ws)) +/ (!ws ">" !ws)