! Document name: ext_rect_frame

! name: ext. rect. frame 24.04.1989.
! internal macro: -

prism_ 10,d,
0,0,15,
0,b,15,
a,b,15,
a,0,15,
0,0,0,
c,c,15,
a-c,c,15,
a-c,b-c,15,
c,b-c,15,
c,c,0

end