-PreSequence = ps:: Elements
- | (Quoted|Word) ^"::" PreSequence /ws
- > PreSequence ^"/" e /ws
- | PreSequence ^"->" e /ws
+PreSequence = PS
+ | (Quoted|Word) ^"::" PreSequence /ws
+ > PreSequence ^"/" e /ws
+ | PreSequence ^"->" e /ws
+PS = Elements