       SippObjectInstance [-flags] objecthandle
              Create  a  new  instance  of  a  previously defined
              object referenced by  objecthandle.  The  lists  of
              surfaces  and  subobjects  in  the  object  are not
              copied, but a new reference with its own  transfor-
              mation matrix is created.

              If the object is changed, i.e. if one of its subob-
              jects or surfaces are transformed, one  is  deleted
              or added, the change will also be seen in the copy.

              The following optional flags may be specified:

                 o -cleartransf - Set the object's transformation
                 matrix to the identity matrix.  Default.

                 o  -keeptransf - Don't reset the object's trans-
                 formation matrix

              Clearing the transformation matrix has  the  affect
              of undoing all rotate, move and scale operations on
              the object.  This repositions  the  object  to  the
              world  center,  which often makes moving the object
              to another location easier.  The transformations on
              subobjects  are  not cleared, leaving the structure
              of composite objects intact.
