Name                        Last modified       Size  Description

 Parent Directory            08-Oct-2008 08:05      -  
 Debian3.1r8/                13-Apr-2008 04:08      -  
 Debian4.0r4a/               01-Aug-2008 07:05      -  
 etch-m68k/                  08-Oct-2008 07:06      -  
 etch-proposed-updates/      08-Oct-2008 07:06      -  
 etch/                       01-Aug-2008 07:05      -  
 experimental/               08-Oct-2008 07:06      -  
 lenny-proposed-updates/     08-Oct-2008 07:06      -  
 lenny/                      08-Oct-2008 07:07      -  
 oldstable-proposed-updates/ 08-Oct-2008 07:11      -  
 oldstable/                  13-Apr-2008 04:08      -  
 proposed-updates/           08-Oct-2008 07:06      -  
 rc-buggy/                   08-Oct-2008 07:06      -  
 sarge-proposed-updates/     08-Oct-2008 07:11      -  
 sarge/                      13-Apr-2008 04:08      -  
 sid/                        08-Oct-2008 07:11      -  
 stable-proposed-updates/    08-Oct-2008 07:06      -  
 stable/                     01-Aug-2008 07:05      -  
 testing-proposed-updates/   08-Oct-2008 07:06      -  
 testing/                    08-Oct-2008 07:07      -  
 unstable/                   08-Oct-2008 07:11      -  

This directory, dists, is the canonical way to access the distributions.
Each distribution can be accessed by name or state from here.

stable, or etch     - the released Debian 4.0r4a.
oldstable, or sarge - the released Debian 3.1r8.
proposed-updates    - possible updates to Debian 4.0.  See the README there.
testing, or lenny   - the development version of the next release.
unstable, or sid    - untested candidate packages for future releases.