gmvinput ascii  
 nodes              7
   1.00000000000000       0.309016994374947      -0.809016994374947     
 -0.809016994374948       0.309016994374947       0.000000000000000E+000
  0.000000000000000E+000
  0.000000000000000E+000  0.951056516295154       0.587785252292473     
 -0.587785252292473      -0.951056516295154       0.000000000000000E+000
  0.000000000000000E+000
  0.000000000000000E+000  0.000000000000000E+000  0.000000000000000E+000
  0.000000000000000E+000  0.000000000000000E+000  0.707000000000000     
 -0.707000000000000     
 cells              5
 tet                4           1           2           6           7
 tet                4           2           3           6           7
 tet                4           3           4           6           7
 tet                4           4           5           6           7
 tet                4           5           1           6           7
 material           5           0
           1           2           3           4           5
           1           2           3           4           5
 endgmv