You can search for identifiers within the package.
in-package search v0.2.0
vlt
vlt.mt
vlt_ppx
Log.Extension
val make : bool -> string -> (Ppxlib.location -> Ppxlib.expression) -> Ppxlib.Extension.t
val tbl : (string * bool * (Ppxlib.location -> Ppxlib_ast.Ast.expression)) list
val is_ext_name : string -> bool
val extensions : Ppxlib.Extension.t list