4
4,2
"top(m+nap)",-999.99
"eenheid",-999.99
"bottom(m+nap)",-999.99
"eenheid",-999.99
3.9,bxk1,3.2,bxk1
3.2,bxz,2.65,bxz
2.65,stz,-6.2,stz
-6.2,end,-,-