Pre action that succeeds if leaf token is all lowercase.
<fromRuleEltNumber,toRuleEltNumber>lowercase();
fromRuleEltNumber - type: int
toRuleEltNumber - type: int
The action lowercase specifies that the first rule element (_xALPHA) must be a word in all lowercase letters in order to be reduced to the suggested node _noun.
@PRE
<1,1>lowercase();
@RULES
_noun <- _xALPHA@@