+PROG SOFIMSHC urs:2
HEAD
PAGE UNII 0
SYST 3D GDIR NEGZ GDIV -1000
CTRL MESH 1

SPT 1   0   FIX F
SPT 2   1   FIX F
SLN 1   1   2   SDIV 0.5  SNO 1  GRP 1

END