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BackSticking Variant of 2, often played before 2, to build up seven rows; middle one unused row_1 = v_margin+12; Initial stab at a 10-step panel layout ideas out_row_1 = v_margin+12; row_2 = row_1 + v_margin + 12; row_1 = vertical_space/7; row_2 = row_1 + vertical_space/7; row_5 = row_4 + vertical_space/7; row_3 = working_increment*2 + out_row_1; //special-case the knob spacing on the mid surdos.