DGF
vertex
  0.000000e+00   0.000000e+00   0.000000e+00
  0.000000e+00   1.000000e+03   0.000000e+00
  1.000000e+03   0.000000e+00   0.000000e+00
  0.000000e+00   0.000000e+00   1.000000e+03
  0.000000e+00   1.000000e+03   1.000000e+03
  1.000000e+03   0.000000e+00   1.000000e+03
  5.000000e+02   5.000000e+02   0.000000e+00
  5.000000e+02   5.000000e+02   1.000000e+03
  0.000000e+00   5.000000e+02   5.000000e+02
  5.000000e+02   0.000000e+00   5.000000e+02
#
simplex               %  tetrahedra
     1      8      0      6  
     6      8      9      7       
     8      3      7      4       
     6      9      0      2         
     5      9      3      7         
     9      3      8      0         
     6      8      0      9         
     3      9      8      7         
     7      6      8      4         
     1      4      8      6         
     7      2      9      6         
     5      2      9      7         
#
boundarysegments
   105            0      6      2
   105            0      1      6
   105            3      4      7
   105            3      7      5
   105            7      4      6
   105            1      6      4
   105            5      7      2
   105            7      6      2
   105            8      4      3
   105            1      4      8
   105            3      0      8
   105            1      8      0
   105            5      3      9
   105            5      9      2
   105            9      3      0
   105            9      0      2
#
BOUNDARYDOMAIN
default 1   % all other boundary segments have id 1
#
