- sorry, I explained myself quite poorly, didn't I. The marking was performed manually, which was easy because of the initial Sort_By_Type. And it will do nothing to future files of the same kind; they would have to manually be marked HIDE as well. All I was trying to say is, that from the beginning I thought "oh no, now I have to right-click each and every file, in order to click the 'hide' box", but that turned out to not be the case. You can mark them all in one go, right-click, and mark HIDE - and they will ALL be hidden, even though there were several file types.
Sorry for the cluttering - I am quite busy at the moment, and a little stressed up.