    2    21     4     63     0   meshio++ Z88 fixture
     1  3  +0.00000000E+00  +0.00000000E+00
     2  3  +5.00000000E+01  +0.00000000E+00
     3  3  +5.00000000E+01  +5.00000000E+01
     4  3  +0.00000000E+00  +5.00000000E+01
     5  3  +2.50000000E+01  +0.00000000E+00
     6  3  +5.00000000E+01  +2.50000000E+01
     7  3  +2.50000000E+01  +5.00000000E+01
     8  3  +0.00000000E+00  +2.50000000E+01
     9  3  +5.00000000E+01  +1.00000000E+02
    10  3  +0.00000000E+00  +1.00000000E+02
    11  3  +5.00000000E+01  +7.50000000E+01
    12  3  +2.50000000E+01  +1.00000000E+02
    13  3  +0.00000000E+00  +7.50000000E+01
    14  3  +1.00000000E+02  +0.00000000E+00
    15  3  +1.00000000E+02  +5.00000000E+01
    16  3  +7.50000000E+01  +0.00000000E+00
    17  3  +1.00000000E+02  +2.50000000E+01
    18  3  +7.50000000E+01  +5.00000000E+01
    19  3  +1.00000000E+02  +1.00000000E+02
    20  3  +1.00000000E+02  +7.50000000E+01
    21  3  +7.50000000E+01  +1.00000000E+02
     1    20
     1     2     3     4     5     6     7     8
     2    20
     4     3     9    10     7    11    12    13
     3    20
     2    14    15     3    16    17    18     6
     4    20
     3    15    19     9    18    20    21    11
