row_2 = working_increment*1 + out_row_1; out_row_7 = working_increment*6 + out_row_1; out_row_3 = out_working_increment*2 + out_row_1; out_row_5 = working_increment*4 + row_1; row_3 = working_increment*2 + out_row_1; out_row_5 = out_working_increment*4 + out_row_1; //special-case the knob circumference. * @todo Provide an.