You can search for identifiers within the package.
in-package search v0.2.0
val pair : 'a equal -> 'b equal -> ('a * 'b) equal
val triple : 'a equal -> 'b equal -> 'c equal -> ('a * 'b * 'c) equal
val list : 'a equal -> 'a list equal
val option : 'a equal -> 'a option equal