+val simpl_tac: pattern:ProofEngineTypes.lazy_pattern -> ProofEngineTypes.tactic
+val reduce_tac: pattern:ProofEngineTypes.lazy_pattern -> ProofEngineTypes.tactic
+val whd_tac: pattern:ProofEngineTypes.lazy_pattern -> ProofEngineTypes.tactic
+val normalize_tac: pattern:ProofEngineTypes.lazy_pattern -> ProofEngineTypes.tactic
+