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Back= row_2 + vertical_space/7; cv_in_1a = [left_col, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_2, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune .
= row_2 + vertical_space/7; cv_in_1a = [left_col, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_2, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune .