Vernacstate.InterpSourcetype t = {system : System.t;summary + libstack
*)lemmas : LemmaStack.t option;proofs of lemmas currently opened
*)program : Declare.OblState.t NeList.t;program mode table. One per open module/section including the toplevel module.
*)opaques : Opaques.Summary.t;qed-terminated proofs
*)}