A computer system having an object oriented operating system utilizes a user interface that includes a display and user command input apparatus. Objects data structures are stored in the computer system's memory, each object having an associated image that can be displayed, and an assigned object...http://www.google.de/patents/US5734905?utm_source=gb-gplus-sharePatent US5734905 - User interface in object oriented computer system for performing intuitive object transformations 
