Hi William, 

thank you very much for your reply. Indeed I could start a new project for
every website. However, since I want to download around 50 websites in total -
I would like to just hand the list to httrack without creating a new project
by hand for every website in the list. 
Is there a way to let httrack to open a new project while working through a
list of websites to mirror? Or to collect the corresponding files in different
subfolders?