🚀 go-pugleaf

>All I know is that they definitely hold a patent (4,555,775)
>which supposedly covers backings stores (one of the most obvious,
>straight forward ways of refreshing windows, my girlfriend just invented
>it without any coaching whatsoever even though she had never heard
>of it).

Well, maybe.  Does anybody who's read the patent know *precisely* what
it covers?  Is the scheme mentioned there similar to the one used by the
MIT server?  At one point in another discussion of this, Amanda Walker
of Visix indicated that the schemes might be different enough that the
MIT server's scheme may not be covered by the patent; I think she'd
indicated that she'd looked at the patent.

>Rumor also has it that AT&T's basis for this is some work done by Rob
>Pike.

The patent is on stuff in Rob's "layers" software, as far as I know.