You can search for identifiers within the package.
in-package search v0.2.0
type t =
| SIGABRT
| SIGALRM
| SIGFPE
| SIGHUP
| SIGILL
| SIGINT
| SIGKILL
| SIGPIPE
| SIGQUIT
| SIGSEGV
| SIGTERM
| SIGUSR1
| SIGUSR2
| SIGCHLD
| SIGCONT
| SIGSTOP
| SIGTSTP
| SIGTTIN
| SIGTTOU
| SIGVTALRM
| SIGPROF
| Unknown of int
val of_int : int -> t
val to_string : t -> string