You can search for identifiers within the package.
in-package search v0.2.0
type style_t =
| PAM_PROMPT_ECHO_OFF
| PAM_PROMPT_ECHO_ON
| PAM_ERROR_MSG
| PAM_TEXT_INFO
type t
val create : style:style_t -> message:string -> t
val style : t -> style_t
val message : t -> string