I just want to maintain an ever growing list of mirrors.
I would add a new URL to the existing ones and when running
httrack I do not want even to try updating the existing ones.
Just let httrack find the URL in the list that is not yet
downloaded and deal with that only.

I could do a separate httrack for all distinct URL's but I
would prefer to have the "Table of Content" feature of httrack.

Is there a way to do this?
Ben