You can search for identifiers within the package.
in-package search v0.2.0
type 'mat unop = ?m:int -> ?n:int -> ?br:int -> ?bc:int -> ?b:'mat -> ?ar:int -> ?ac:int -> 'mat -> 'mat
type 'mat binop = ?m:int -> ?n:int -> ?cr:int -> ?cc:int -> ?c:'mat -> ?ar:int -> ?ac:int -> 'mat -> ?br:int -> ?bc:int -> 'mat -> 'mat