Consider the following example:
....
(:types
aParam bParam cParam - object
a2Param - aParam
)
.....
(:action someAction
:parameters(?a aParam ?b bParam)
:precondition(and (predicate1 ?a ?b)
(predicate2 ?c ?b)
(predicate3 ?c ?a))
Suppose someAction only needs parameters of type aParam and bParam, which are mentioned ?a and ?b in the parameters section, but then predicate2 and predicate3 require ?c of type cParam. Is this syntax allowed? or should we also mention ?c ?cParam inside parameters and have
:parameters(?a aParam ?b bParam ?c cParam)
Similar question is considering effects with extra parameters.