! Document name: round_window

!round_window  '91

addy b/2
muly b/2
mulx a/2

cprism_ G_,H_,I_,
29,C_,
1,0,13,
0.966,0.259,13,
0.866,0.5,13,
0.707,0.707,13,
0.5,0.866,13,
0.259,0.966,13,
0,1,13,
-0.259,0.966,13,
-0.5,0.866,13,
-0.707,0.707,13,
-0.866,0.5,13,
-0.966,0.259,13,
-1,0,13,
-0.966,-0.259,13,
-0.866,-0.5,13,
-0.707,-0.707,13,
-0.5,-0.866,13,
-0.259,-0.966,13,
0,-1,13,
0.259,-0.966,13,
0.5,-0.866,13,
0.707,-0.707,13,
0.866,-0.5,13,
0.966,-0.259,13,
1,0,0,
1,-1,0,
-1,-1,0,
-1,1,0,
1,1,0
del top
end