Definitions for "ESC key"
Keywords:  dialog, exit, keyboard, ctrl, abort
A control character whose function varies with the software or type of terminal; it generally serves to transfer control to another part of the program or to exit the program.
A key that will usually back you out of a program, a menu, a dialog box, or a Command. (7/96)
Escape key. Located near the upper left corner of the keyboard. Its use depends on the software being run, but frequently used for backing out of what you were just doing.