The Domain handle allows one to specify a rectangular patch on a NURBs
or Bezier surface.

Parameters:


    input       - A group field.  This specifies the surface to choose
                  the domain on.
    onoff       - Whether the handle is visible, 1 means visible.
    u0,v0,u1,v1 - These describe the two opposite corners of the
                  square in parametric space the user has selected.
                  Their values are in the range of [0..1], not the
                  natural basis of the surface.

See Also: None
