I have an interesting question (If it's a FAQ, please just let me know -).
There is a program that I'd like to work on and make a derivative of that
is currently released into the public domain.  The work that I do, once it
is complete, I would rather make available to people in a way that future
work will also be made available, and that a Commercial author could not
include it in their package and never make their work available to the
public (Keep that Wheel a turning).

  Is it possible to re-release something previously released as
'Public Domain' and add what is to some seen as the 'restrictions' of
the GNU Public Licence?  What are the alternatives (Other than the
obvious one which is to keep it 'PD', something I'd rather not do as I
like to keep things going - There are already many derivatives of this PD
work that are restricted distribution, part of commercial packages, or
in some way 'un-available' (Heck, there are two programs that do
exactly what I need that are derivatives of this package, but both are
part of other Commercial packages).

  Thoughts?

--
  Opinions expressed in this message are my Own. I represent nobody else.
  Russell McOrmond   r...@Atronx.OCUnix.On.Ca   {tigris,alzabo,...}!atronx!rwm
  FidoNet 1:163/109  Net Support: (613) 230-2282  (V.32Bis) Amiga-Fido 1:1/109
  Gateway for .Amiga.OCUnix.On.Ca    Current WELMAT 'keeper of sources'.