Quit key

The logical key that the user can press within a 4GL application to indicate cancellation of the entered data or query criteria. Pressing it requests abnormal completion of the INPUT, CONSTRUCT, PROMPT, INPUT ARRAY, or DISPLAY ARRAY statements. The physical key for Quit is CONTROL-\. If the 4GL program does not include the DEFER QUIT statement, pressing this key terminates program execution. With DEFER QUIT, pressing the Quit key sets the built-in quit_flag variable to TRUE but does not cancel the current interaction statement.

See also Accept key, exception handling, Interrupt key, logical key.