You can search for identifiers within the package.
in-package search v0.2.0
type blob
val open_blob : t -> ?dbname:string -> ?rw:bool -> string -> string -> int64 -> blob
val close : blob -> unit
val reopen : blob -> int64 -> unit
val length : blob -> int
val read : blob -> ?offs:int -> Bytes.t -> int -> unit
val write : blob -> ?offs:int -> Bytes.t -> unit