       SippBezierFile fileid resolution shaderhandle [texture]
              Read   a   file  specified  by  fileid,  containing
              descriptions of a set of Bezier patches  or  Bezier
              curves.  The  surface  is shaded with the algorithm
              and surface parameters specified  by  shaderhandle.
              See  the sipp primitives manual page for a descrip-
              tion of this file format.  The  SippBezierCurve and
              SippBezierPatch  commands  are the preferred method
              of creating Bezier surfaces, this command  is  pro-
              vided  for  compatibility  with  existing SIPP data
              files.

              If the file contains descriptions of patches, these
              patches will be tesselated into resolution by reso-
              lution polygons and installed in a sipp  object  as
              one surface.

              If  the  file  contains  descriptions  of curves, a
              rotational surface  will  be  created  by  rotating
              these  curves  about the y-axis. The resulting sur-
              face will be tesselated into polygons and installed
              in a sipp object as one surface.

              Texture is the texture mapping algorithm to use for
              the object.  The texture coordinates are a bit spe-
              cial  for  the  Bezier  patches.   CYLINDRICAL  and
              SPHERICAL coordinates are not applicable,  if  they
              are  specified,  SIPP  will use NATURAL anyway. The
              NATURAL mapping is a two dimensional mapping  using
              the  surface  parameters u and v, see figure below.
              Note that these parameters range from 0 to 1 within
              each patch!

              See   the   help  file  sipp/Texture-Map  for  more
              details.

              An object handle that references the new object  is
              returned.
