NAME
          DtNurbsTrimGetKnotVector - Get the trim knot vectors for the
          given NURBS surface.


     SYNOPSIS
          #include <Dt.h>


          int  DtNurbsTrimGetKnotVector( int shapeID, int groupID, int trimID, int *num, float **knotVector )


     DESCRIPTION
          DtNurbsTrimGetKnotVector() returns the trim knot vectors for
          the NURBS surface via the pointer to the variable
          knotVector. The number of trim knot vectors in the surface
          is returned via the pointer to num. The trim knot vectors
          are for the trim curve trimID on the surface indicated by
          shapeID and group groupID.


     IMPLEMENTATION
          The AliasAPI implementation of Dt does not support any
          NURBS geometry.  No NURBS geometry will be returned by this
          function.


     DIAGNOSTICS
          DtNurbsTrimGetKnotVector() returns one on success and zero
          on failure.


     FILES
          Link with -lDtOMio