I've been testing WordPress for about two weeks. I found this to be the best way to write/edit posts:
1. write/edit the post in Microsoft word. Type extended characters into the document.
2. copy and paste the post into the WordPress Write Post window.
3. save the post and voila -- the extended characters are replaced by the correct codes (like ₂)
This morning, I noticed that my extended characters had gone haywire. They weren't appearing correctly in the blog.
I did a reboot and the problem is gone, but something has changed. It used to be that when I saved a post, the extended characters got converted. Now, they as extended characters after the post is saved!
The characters show up just fine in the blog. Still, I'm trying to figure out what changed and why. Any ideas? Thanks