You can search for identifiers within the package.
in-package search v0.2.0
val t : unit Ctypes_static.ptr Ctypes.typ
val new_ : (unit -> unit Ctypes_static.ptr F.return) F.result
val free : (unit Ctypes_static.ptr -> unit F.return) F.result
val bin2bn : (char Ctypes_static.ptr -> int -> unit Ctypes_static.ptr -> unit Ctypes_static.ptr F.return) F.result
val hex2bn : (unit Ctypes_static.ptr Ctypes_static.ptr -> string -> int F.return) F.result