You can search for identifiers within the package.
in-package search v0.2.0
optint
Optint.Infix
val (+) : t -> t -> t
val (-) : t -> t -> t
val (*) : t -> t -> t
val (%) : t -> t -> t
val (/) : t -> t -> t
val (&&) : t -> t -> t
val (||) : t -> t -> t
val (>>) : t -> int -> t
val (<<) : t -> int -> t