Dreamweaver: Insert HTML special characters command not working

[Compulsive Editor]

All of a sudden, my Dreamweaver CS3 won't insert HTML special characters.

When I open the Insert menu and choose HTML > Special Characters, the menu of special characters is grayed out.

I'd been trying to do some web coding that I hadn't tried before, so I may have changed a preference, but I have no idea what it would have been.

Any advice on how to turn on the HTML special characters menu?

Thanks!

[Compulsive Editor]

Oh never mind. Somehow I had saved the document with the wrong filename extension. Changed it to .html and everything's working fine. Maybe I need a nap.