Pcoq.Rule
val stop : ( 'self, Gramlib.Grammar.norec, 'r, 'r ) t
val next :
( 'self, _, 'a, 'r ) t ->
( 'self, _, 'b ) Symbol.t ->
( 'self, Gramlib.Grammar.mayrec, 'b -> 'a, 'r ) t
val next_norec :
( 'self, Gramlib.Grammar.norec, 'a, 'r ) t ->
( 'self, Gramlib.Grammar.norec, 'b ) Symbol.t ->
( 'self, Gramlib.Grammar.norec, 'b -> 'a, 'r ) t