[p4] perforce vs. subversion

[Jay Glanville]

> * File attributes. Perforce simply doesn't have them. It is nice to be
> able to store information about a file and its revision that is not in
> the file itself.

Actually, Perforce does have attributes.  They're currently in the
undocumented section.  (p4 help undoc).  I believe that the P4 is
already using this feature in one of their toolsets (P4G, I think).

JDG