You can search for identifiers within the package.
in-package search v0.2.0
module List : sig ... end
module Option : sig ... end
val sprintf : ('a, unit, string) Stdlib.format -> 'a
val printf : ('a, Stdlib.out_channel, unit) Stdlib.format -> 'a
val eprintf : ('a, Stdlib.out_channel, unit) Stdlib.format -> 'a
val bprintf : Stdlib.Buffer.t -> ('a, Stdlib.Buffer.t, unit) Stdlib.format -> 'a
val fprintf : Stdlib.out_channel -> ('a, Stdlib.out_channel, unit) Stdlib.format -> 'a