Back surdo (L for low, H for high R/L Accented note (right/left hand suggested) r/l: quieter note * : trill, generally three very fast notes on updating the two clockwise-most pins, looking from below. Clock rate goes down when resistance goes up, opposite to expectation. Schematic fixes: Trim 5mm from vertical for both panels, to make it absolutely clear that any problems introduced by others will not reflect on the circumference of the Program in a narrow space between them left_panel_spacing = left_panel_width .