set rband num mode x1 y1 x2 y2
Sets the mode and defines the active region for the 'rubber band' widget.
num - widget numbermode - may be either boxor linex1 - lowest X point where the widget will be active (in virtual page units)y1 - lowest Y point where the widget will be active (in virtual page units)x2 - highest X point where the widget will be active (in virtual page units)y2 - highest Y point where the widget will be active (in virtual page units)After executing set rband, rubber bands are defined by executing q pos which freezes the system until the user clicks, drags, and then releases the mouse somewhere within the active rband area. See the q pos reference page for details on the returned information.
box mode, as the user clicks and drags the mouse in the active rband area a box is drawn with one corner located at the initial click and the opposite corner located at the release point. In line mode, a line is drawn between these two points.