I use Notetab Light rather than Notepad as a text editor...this probably not terribly important re my question.
But sometimes, only sometimes, when I save a .txt file in Notetab light and later change it a little and save the changes, XP makes a BAK file. But if I try and view it, I get told Windows cannot open this file.
So what is going on? Why are just some files worthy of this BAK file extension?