row_2 = row_1 + v_margin + 12; row_1 = bottom_row + v_margin + 12; row_2 = row_1 + vertical_space/7; row_6 = row_5 + vertical_space/7; row_5 = working_increment*4 + out_row_1; out_row_4 = out_working_increment*3 + out_row_1; rotary_knob_row = top_row - 30; //special-case the knob.