You can search for identifiers within the package.
in-package search v0.2.0
type attributes = (string * string) list
type element = {
name : string;
attributes : attributes;
elements : element list;
}
type t = {
version : string;
encoding : string;
doctype : string;
dtd : string;
content : element;
exception Parse_error of string
val from_file : ?fixattrs:(string -> attributes -> attributes) -> string -> t