NASTRAN 
$
SOL 200
$
CEND
$
TITLE= Deck exported from Apex Utils
$
ECHO = SORT(PARAM)
$
AUTOSPC (NOPRINT, EPS=1.E-6)=YES
$
DESOBJ=10001

SUBCASE 1
$  LOAD = yyy   added automatically
$  SPC = xxx    added automatically

BEGIN BULK
$ Optimization Parameters :
DOPTPRM, DESMAX, 100
$ Design Variables for TOPOLOGY Optimization :
TOPVAR,xxx,yyy,PSOLID,1.0,,,,zzz
,TDMIN,xx
,STRESS,xx
$ Global Target : MASS FRACTION
DRESP1   10001   FRM     FRMASS
$
$ Suppress printout of Grid Point Singularity Table
PARAM,PRGPST,NO
$ Generates HDf5 format, sets large rotation offsets,  warns for shell normals
MDLPRM,HDF5,0
$ Ignore Shell Normal checks 
MDLPRM,IGNSHBDN,1
$ Generates OP2 file on  Enhanced op2 format
PARAM,POST,1
$ Maxratio is  controlling  when a matrix is considered  near singiular
PARAM   MAXRATIO   1.E+7
$ Print min and max applied loads, constraint forces and applied loads
PARAM   PRTMAXIM     YES        
$ Calculates Model Mass
PARAM   GRDPNT         0  
