psy ::= ps
| ps wp ^"/" ws e
psx ::= psy => "psy"
- | e "<-" psy /ws => "psyl"
+// | e "<-" psy /ws => "psyl"
| psy "->" e /ws => "psyr"
- | e "<-" psy "->" e /ws => "psylr"
+// | e "<-" psy "->" e /ws => "psylr"
Sequence ::= Quoted => "qprod"
- > psx
+ > psx => "psx"
| psx "=>" ^"[]" /ws
| psx ^"=>" (word|Quoted) /ws