The only concern is that if I include several sites in the download, I must
have a filter rule to allow XML extensio for each once. This is feasable but
may become difficlut to maintain if I add more sites and if other extensions
are to be excluded in the same way (XML was an example).

Do you think a rule for excluding a specified extension for  all external
sites is possible in a next release ?
BTW I can do without, but it would more user friendly for that case.

Again thank you for your suggestion and kind regards