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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 gluNewNurbsRen-
		 derer).

       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
       tessellator in the NURBS	callback functions (set	by gluNurbsCallback).

SEE ALSO
       gluNurbsCallback

						     GLUNURBSCALLBACKDATAEXT()

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