A method for editing graphic objects in an interactive draw graphic system, in which the operator is allowed to select one of two editing modes which results in a graphic object being either redefined or remaining as is when a graphical editing action is applied only to a portion (sub-object) of the...http://www.google.de/patents/US4703321?utm_source=gb-gplus-sharePatent US4703321 - Method for editing a graphic object in an interactive draw graphic system
