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GLUNURBSCALLBACKDATAEXT()			       GLUNURBSCALLBACKDATAEXT()

NAME
     gluNurbsCallbackDataEXT - set a user data pointer

C SPECIFICATION
     void gluNurbsCallbackDataEXT( GLUnurbs* nurb,
				   GLvoid* userData )

     delim $$

PARAMETERS
     nurb      Specifies the NURBS object (created with gluNewNurbsRenderer).

     userData  Specifies a pointer to the user's data.

DESCRIPTION
     gluNurbsCallbackDataEXT is used to pass a pointer to the application's data
     to  NURBS tessellator. A copy of this pointer will be passed by the tessel-
     lator in the NURBS callback functions (set by gluNurbsCallback).

SEE ALSO
     gluNurbsCallback

						       GLUNURBSCALLBACKDATAEXT()

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