read/iges_grid
reads and processes an IGES file containing surfaces, curves and points in IGES nurbs format.
FORMAT:
read/iges_grid/file_name/[iopt_nurbs]/[iopt_nurbl]/[iopt_nurp]/[ksi]/[ksj]/[kli]
 
iopt-nurbs default=1 read quad nurb surface if =1
iopt-nurbl default=0 read triangle nurb surface if = 2
iopt-nurbp default=0 read triangle nurb curves if = 1
ksi, ksj dimensions of surface nurb
kli dimension of line nurb