You can search for identifiers within the package.
in-package search v0.2.0
spotlib
Spotlib.Xobj
type tag =
| Abstract
| Closure
| Custom
| Double
| Double_array
| Forward
| Infix
| Int
| Lazy
| No_scan
| Object
| Out_of_heap
| String
| Unaligned
| Unknown of int
val parse_tag : int -> tag
val tag_name : tag -> string
val dump : Obj.t -> unit