You can search for identifiers within the package.
in-package search v0.2.0
type file
type handle = {
fd : Unix.file_descr;
dec : file t;
callbacks : file callbacks;
info : info;
comments : (string * (string * string) list) option;
}
val create_from_fd : write -> Unix.file_descr -> handle
val create : write -> string -> handle