splinecurves2d
5

12
-3	-3	1
3	-3	1
3	3	1
-3	3	1

0.2	-0.5	10	-hpref
0.3	-0.5	10	-hpref
0.3	0.5	10	-hpref
0.2	0.5	10	-hpref
-0.3	-0.5	10	-hpref
-0.2	-0.5	10	-hpref
-0.2	0.5	10	-hpref
-0.3	0.5	10	-hpref

12
1	0	2	1	2	1  -bc=1
1	0	2	2	3	1  -bc=1
1	0	2	3	4	1  -bc=1
1	0	2	4	1	1  -bc=1

0	1	2	5	6	1  -bc=2
0	1	2	6	7	1  -bc=2
0	1	2	7	8	1  -bc=2
0	1	2	8	5	1  -bc=2

0	1	2	9	10	1  -bc=3
0	1	2	10	11	1  -bc=3
0	1	2	11	12	1  -bc=3
0	1	2	12	9	1  -bc=3