> Hynek: You must forgive me, I'm a recovering Windows programmer.  I thought extended attributes were a Linux-only thing.  Can you tell me what other platforms they are available on?  And/or suggest some alternate language?

http://en.wikipedia.org/wiki/Xattr has a list. The question what’s most
user friendly. The best way for the user would be your text. However
we’ll have to dig through the docs once we support xattr on more platforms.

However as I see it, we’re deep down this path already anyway
(http://docs.python.org/dev/library/os.html?highlight=xattr#linux-extended-attributes),
so I guess we can keep your docs.

One nit: I’d swap your quoted "extended attributes" to unquoted but
linked to the doc above.