method load_logo_with_qed: unit
method load_sequents: GrafiteTypes.incomplete_proof -> unit
method goto_sequent: int -> unit (* to be called _after_ load_sequents *)
method load_logo_with_qed: unit
method load_sequents: GrafiteTypes.incomplete_proof -> unit
method goto_sequent: int -> unit (* to be called _after_ load_sequents *)