You can search for identifiers within the package.
in-package search v0.2.0
val env_and_file : string -> string option * string
env_and_file s returns the environment and file/prelude string describe by s. I.e. env_and_file "a:prelude.ml" is (Some "a", "prelude.ml").
env_and_file s
s
env_and_file "a:prelude.ml"
(Some "a", "prelude.ml")