> HTTRack could use a second set of scan rules for the 'external depth' links:
> What if I want +*website.com/* but from the links which are external from
anywhere in this site, I would like to get *.html and *.js and *.zip but NOT
get any files from any site that is external to these sites!

hehe, no doubt Xavier's head is reeling.

In the documentation there are already some little-used filters:  *[file]
*[name] *[path]

While those are no help, imagine there was another one like *[external] ...
then you might have filters like "+foo.com/*[external]*.zip" which would
include all ZIP files on links external to foo.com

But really, I think it would be very difficult to implement a filter system
which could have as much control as you would like.  Really the only thing
that can't be done at the moment is the *.php->*.zip idea