?depth:int -> ?using:Cic.term -> Cic.term -> ProofEngineTypes.tactic
val exact : term:Cic.term -> ProofEngineTypes.tactic
val exists : ProofEngineTypes.tactic
?depth:int -> ?using:Cic.term -> Cic.term -> ProofEngineTypes.tactic
val exact : term:Cic.term -> ProofEngineTypes.tactic
val exists : ProofEngineTypes.tactic