You can search for identifiers within the package.
in-package search v0.2.0
val appendChild : ?before:'a elt -> 'b Id.id -> 'c elt -> unit
val appendChildren : ?before:'a elt -> 'b Id.id -> 'c elt list -> unit
val removeChild : 'a Id.id -> 'b elt -> unit
val replaceChild : 'a Id.id -> 'b elt -> 'c elt -> unit
val removeChildren : 'a Id.id -> unit
val replaceChildren : 'a Id.id -> 'b elt list -> unit