You can search for identifiers within the package.
in-package search v0.2.0
val id : 'a -> 'a
The identity function.
val rot2 : ('a -> 'b -> 'c) -> 'b -> 'a -> 'c
Moving the second argument to the first position.
val rot3 : ('a -> 'b -> 'c -> 'd) -> 'c -> 'a -> 'b -> 'd
Moving the third argument to the first position.