Buttonrows
ButtonRows=nn is a parameter used to specify the button bar when opening a new window.
As of 4.20, BUTTONROWS are now changed only when a new Buttonrows value is given and Buttonrows=0 is now supported. If you specify Buttonrows=0 in the Config SCREEN OPENDFLT statement then OPEN #0 will default to Buttonrows=0.
See also OPEN WINDOW.