PSF EXT

         1 !NTITLE
 Conversion from XYZ file 

         3 !NATOM
         1 M1              1 PLATE    Si      Si      4.000000        28.085
         2 M1              1 PLATE    O       O      -2.000000        15.999
         3 M1              1 PLATE    O       O      -2.000000        15.999

         2 !NBOND
         1         2         1         3

         1 !NTHETA
         2         1         3

         0 !NPHI

         0 !NIMPHI

         0 !NDON

         0 !NACC

         0 !NNB

         0 !NGRP

