val split : ProofEngineTypes.tactic
val symmetry : ProofEngineTypes.tactic
val transitivity : term:Cic.term -> ProofEngineTypes.tactic
+val unfold :
+ ?what:Cic.term ->
+ pattern:ProofEngineTypes.pattern -> ProofEngineTypes.tactic
val whd : pattern:ProofEngineTypes.pattern -> ProofEngineTypes.tactic