I read through all the info I could on how the filter works. I am working with a very large directory, and the files I'm looking for are all either filenameold.htm or html or filename.bak. I don't want to just GREP the directory because there are a few bak files I may want to keep and also old may appear in some of the files I want to keep.
So, in the filter settings, I put *.* in the exclude side, and *old.* and *.bak in the include side. That didn't work so I tried reversing them. Didn't work either. I either get the directory to show all the files I don't want to see, or no files at all.