This attribute specifies the origin of the bar, the point from which the bar is drawn until it reaches the level of VALUE.
For example, a BAR widget with a MINIMUM of 0, MAXIMUM of 100, VALUE of 50, and ORIGIN of 40 will generate a bar height of 10 (VALUEminus ORIGIN, or 50-40 in this case) with the bottom of the bar at 40 and the top at 50. A line is drawn to show the newly established ORIGIN.
