Abstract: The invention is an object-oriented graphic user interface for use in computer controlled display systems, and in particular, display systems having object oriented graphic interfaces. A central processing unit (CPU) is provided and is coupled to a display for displaying graphic and other data. The CPU is further coupled to a cursor control device which permits a user to selectively position a cursor at a desired location on the display, and signal the CPU of selections in accordance with the teachings of the present invention. Buttons are generated by the CPU and displayed which correspond to either a single function to be executed by the CPU, or a button stack which has associated therewith a plurality of functions disposed on a menu. The menu includes a plurality of buttons and/or button stacks. A button stack may be provided with a default function which is automatically executed by the CPU when a predetermined signal is provided by the user through the cursor control device.