FUNCTION: void gluEndPolygon ( GLUtesselator* tess ) ;
FUNCTION: void gluEndSurface ( GLUnurbs* nurb ) ;
FUNCTION: void gluEndTrim ( GLUnurbs* nurb ) ;
-FUNCTION: char* gluErrorString ( GLenum error ) ;
+FUNCTION: c-string gluErrorString ( GLenum error ) ;
FUNCTION: void gluGetNurbsProperty ( GLUnurbs* nurb, GLenum property, GLfloat* data ) ;
-FUNCTION: char* gluGetString ( GLenum name ) ;
+FUNCTION: c-string gluGetString ( GLenum name ) ;
FUNCTION: void gluGetTessProperty ( GLUtesselator* tess, GLenum which, GLdouble* data ) ;
FUNCTION: void gluLoadSamplingMatrices ( GLUnurbs* nurb, GLfloat* model, GLfloat* perspective, GLint* view ) ;
FUNCTION: void gluLookAt ( GLdouble eyeX, GLdouble eyeY, GLdouble eyeZ, GLdouble centerX, GLdouble centerY, GLdouble centerZ, GLdouble upX, GLdouble upY, GLdouble upZ ) ;