I subscribed to a group, now how do I download headers?
At the moment ABZ doesn't support classic headers download as we all know, but you have various integrated in ABZ public and NLSS (payed) search engines to search and retrive NZB and if your server supports XPAT server side search, but although you can select more groups, only one (the highest selected in list of Favourites groups) is searched per search.
