You might want to take a look at ns workshop slides http://www.isi.edu/nsnam/ns/ns-documentation.html or Polly's tutorial http://www.tik.ee.ethz.ch/~huang/talk/ns-tutorial/ to see how to add new classes in Tcl space. Kun-chan Lan On Mon, 29 Jan 2001, Kai Li wrote: > I want to inherit two different class for my own class,Is it possible and how do > I bind in TClclass ? > > thanks, > Kai >