A support apparatus for suspending a display has a holder with a first end pivotally mounted on a ceiling, an arm pivotally connected to a second end of the holder, a redirector pivotally mounted on the arm, and a seat pivotally mounted on the redirector. A highlight likelihood and color neutrality is determined for the current pixel color value. Furthermore, the driver circuit may be configured to selectively energize subsets of the plurality of conductive trace. Therefore, the invention automatically and accurately conveys finished products from the reciprocating cutting-off device of the cutting unit to the finished product receiving rack. Systems for computing hemodynamic quantities and computer readable storage media are described.