You can search for identifiers within the package.
in-package search v0.2.0
val text : string -> arg
val bool : bool -> arg
val int : int -> arg
val nativeint : nativeint -> arg
val int32 : int32 -> arg
val int64 : int64 -> arg
val float : float -> arg
val blob : string -> arg
val opt : ('a -> arg) -> 'a option -> arg