HST> As for why some packages explicitly depends on xaw3dg, it just
HST> shows that Xaw3d and plain Xaw are not 100% compatible -- see gv,
HST> for example. I'm not sure if gv is exactly *dependent* on
HST> xaw3d-specific features; maybe it is.
I believe that there is a problem with applications that subclass Xaw3D
widgets.
(In addition, Xaw3D contains the rather nice Layout widget that Xaw
does not have, but gv doesn't use it.)
Juliusz