You can search for identifiers within the package.
in-package search v0.2.0
val decl_map : (Term.term -> Term.term) -> (Term.term -> Term.term) -> decl -> decl
val decl_fold : ('a -> Term.term -> 'a) -> ('a -> Term.term -> 'a) -> 'a -> decl -> 'a
val decl_map_fold : ('a -> Term.term -> 'a * Term.term) -> ('a -> Term.term -> 'a * Term.term) -> 'a -> decl -> 'a * decl