You can search for identifiers within the package.
in-package search v0.2.0
val select_one : string -> 'a node -> element node
val attribute : string -> element node -> string
val id : element node -> string
val element : 'a node -> element node
val leaf_text : 'a node -> string
val nth : int -> 'a nodes -> 'a node
val first : 'a nodes -> 'a node
val last : 'a nodes -> 'a node
val tag : string -> 'a node -> element node
val parent : 'a node -> element node
val child : 'a node -> general node
val child_element : 'a node -> element node
val next_sibling : 'a node -> general node
val previous_sibling : 'a node -> general node
val next_element : 'a node -> element node
val previous_element : 'a node -> element node