You can search for identifiers within the package.
in-package search v0.2.0
val is_valid : string -> bool
val uppercase : string -> string
val lowercase : string -> string
val capitalize : string -> string
val uncapitalize : string -> string
val escape : string -> string
val unescape : string -> string option
val escape_string : string -> string
val unescape_string : string -> string option