<A HREF="http://world.std.com/~mikep/"
  >Mike Podanovsky's</A> <A HREF="http://world.std.com/~mikep/rxdos-page.html"
  >RxDOS</A> (<A HREF="http://sourceforge.net/projects/rxdos"
  >SourceForge project</A>) is an *(OS), a (commercial) _(DOS) clone as described and available in the author's book "Dissecting _(DOS)".
