What happened?
HTML-Kit is a wonderful free text editor. It's also a dangerous weapon in the hands of the not-so-bright. I was making use of my index.pl script, going through it, commenting out things I didn't need for what I wanted to use it for. Then, after working on a separate file, I hit the "Save All" button, and HTML-Kit did just what I asked -- it saved the script back to the server. Whoops.
