No backchains

[William S. Frantz]

> This applies only to putting domains on a queue.  Continuing to use
> the hook slot for the linkup doesn't strike me as problematic even if
> we move towards a scavenging approach.

Could you outline your scavenging approach?  It is not clear to me
what you have in mind from just its name.

-----------------------------------------------------------------
Bill Frantz                   Periwinkle  --  Computer Consulting
(408)356-8506                 16345 Englewood Ave.
frantz@netcom.com             Los Gatos, CA 95032, USA