What's the difference between upper-alpha and upper-latin in the css list-style?

I was wondering what's the difference between upper-alpha and upper-latin in the css list-style开发者_StackOverflow ?

The main difference is that upper-latin isn't supported by IE6 or IE7 whereas upper-alpha is.

Other than that, there doesn't seem to be any difference at all. They are described identically in the offical W3C spec.

For browser compatibility, see Quirksmode.

They do the same.

MDC says:

For compatibility with Internet Explorer 7 (and lower) avoid lower-latin and upper-latin. Instead, use lower-alpha and upper-alpha.