+val we_proceed_by_cases_on: NTacStatus.tactic_term -> NTacStatus.tactic_term -> 's NTacStatus.tactic
+val we_proceed_by_induction_on: NTacStatus.tactic_term -> NTacStatus.tactic_term -> 's NTacStatus.tactic
+val byinduction: NTacStatus.tactic_term -> string -> 's NTacStatus.tactic
+val case: string -> (string*NotationPt.term) list -> 's NTacStatus.tactic
+val obtain: string -> NTacStatus.tactic_term -> 's NTacStatus.tactic
+val conclude: NTacStatus.tactic_term -> 's NTacStatus.tactic