what's what in official yum repositories?

[Christopher Hicks]

I'm working on setting up a local Fedora yum mirror.  Eventually I figured
out that I needed to be rsync fedora.us instead of fedora (oopsie).  Is
there an explanation somewhere of why these two things are seperate?  
Also, now I'm presented with a slew of different parts of the repository:

 RPMS.k12ltsp/           20-Jul-2003 14:33      -  
 RPMS.os/                06-Nov-2003 01:07      -  
 RPMS.stable/            11-Feb-2004 23:32      -  
 RPMS.testing/           11-Feb-2004 13:04      -  
 RPMS.unstable/          06-Feb-2004 14:21      -  
 RPMS.updates-testing/   12-Feb-2004 02:20      -  
 RPMS.updates/           12-Feb-2004 02:17      -  

os, k12ltsp, updates and updates-testing make sense, but what are stable, 
unstable, and testing for?

-- 
</chris>

No, no, you're not thinking, you're just being logical.
-Niels Bohr, physicist (1885-1962)