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+'\" e
+'\"! eqn | mmdoc
+'\"macro stdmacro
+.ds Vn Version 1.2
+.ds Dt 6 March 1997
+.ds Re Release 1.2.0
+.ds Dp May 02 11:53
+.ds Dm 37 nurbscall
+.ds Xs 16331 3 nurbscallbackdata.gl
+.TH GLUNURBSCALLBACKDATA 3G
+.SH NAME
+.B "gluNurbsCallbackData
+\- set a user data pointer
+
+.SH C SPECIFICATION
+void \f3gluNurbsCallbackData\fP(
+GLUnurbs* \fInurb\fP,
+.nf
+.ta \w'\f3void \fPgluNurbsCallbackData( 'u
+	GLvoid* \fIuserData\fP )
+.fi
+
+.EQ
+delim $$
+.EN
+.SH PARAMETERS
+.TP \w'\fIuserData\fP\ \ 'u 
+\f2nurb\fP
+Specifies the NURBS object (created with \%\f3gluNewNurbsRenderer\fP).
+.TP
+\f2userData\fP
+Specifies a pointer to the user's data.
+.SH DESCRIPTION
+\%\f3gluNurbsCallbackData\fP 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 \%\f3gluNurbsCallback\fP).
+.SH NOTES
+\%\f3gluNurbsCallbackData\fP is available only if the GLU version is 1.3 or greater.
+.SH SEE ALSO
+\%\f3gluNewNurbsRenderer(3G)\fP,
+\%\f3gluNurbsCallback(3G)\fP