val whd_tac: pattern:ProofEngineTypes.lazy_pattern -> ProofEngineTypes.tactic
val normalize_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