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 ?

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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.

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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.