val pause: bool -> unit
val step : unit -> unit
val give_hint : int -> unit
+val give_prune_hint : int -> unit
val lambda_close :
?prefix_name:string -> Cic.term -> Cic.metasenv -> Cic.context -> Cic.term
val pp_proofterm: Cic.term -> string
+val revision : string (* svn revision *)
+val size_and_depth : Cic.context -> Cic.metasenv -> Cic.term -> int * int