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Unescape rotate_vector_cos = 0.94; // 'x' of 20 degree rotation rotate_vector_sin = 0.34; // 'y' of rotation left_edge = -rotate_vector_sin * rail_depth; right_edge = height - 25; // build up seven rows; middle one unused row_2 = row_1 + vertical_space/7; row_4 = working_increment*3 + row_1; row_4 = working_increment*3 + out_row_1; out_row_7 = working_increment*6 + out_row_1; out_row_6 = working_increment*5 + out_row_1; out_row_5 = working_increment*4 + row_1; row_3 = row_2 + vertical_space/7; row_7 = row_6 + vertical_space/7; row_4 = working_increment*3 + out_row_1; out_row_3 = working_increment*2 + out_row_1; out_row_6 = out_working_increment*5 + out_row_1; out_row_3 = out_working_increment*2 + out_row_1; out_row_4 = out_working_increment*3 + out_row_1; out_row_9 = working_increment*8 + out_row_1; out_row_5 = out_working_increment*4.

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