reserved lines

Areas in a 4GL window which are set aside for use by the form or window. These areas include: Error line, where the output of the ERROR statement displays (default is the last line on the screen); Comment line, where the text in the COMMENTS field attribute displays (default is the next to last line on the screen and the last line on all other 4GL windows); Form line, where the first line of the screen form displays (default is the 3rd line of the current 4GL window); Menu line, where the ring menu displays (default is the 1st line of the current 4GL window); Message line, where the output of the MESSAGE statement displays (default is the 2nd line of the current 4GL window; and Prompt line, where the output of the PROMPT statement displays (default is the 1st line of the current 4GL window). These default positions can be changed with the OPTIONS statement or with the ATTRIBUTES clause of the OPEN WINDOW statement.

See also 4GL window, ring menu, screen, screen form.