-As you can see, the top-level directory of the distribution contains
-three directories, namely <em>main</em>, <em>contrib</em>, and
-<em>non-free</em>. These directories are called <em>sections</em>.
- <p>
-In each section, there is a directory with the source packages
-(source), a directory for each supported architecture
+As you can see, the top-level directory contains two directories,
+<tt>dists/</tt> and <tt>pool/</tt>. The latter is a ``pool'' in which the
+packages actually are, and which is handled by the archive maintenance
+database and the accompanying programs. The former contains the
+distributions, <em>stable</em>, <em>testing</em> and <em>unstable</em>.
+Each of those distribution directories is divided in equivalent
+subdirectories purpose of which is equal, so we will only explain how it
+looks in stable. The <tt>Packages</tt> and <tt>Sources</tt> files in the
+distribution subdirectories can reference files in the <tt>pool/</tt>
+directory.
+ <p>
+<tt>dists/stable</tt> contains three directories, namely <em>main</em>,
+<em>contrib</em>, and <em>non-free</em>.
+ <p>
+In each of the areas, there is a directory with the source packages
+(<tt>source</tt>), a directory for each supported architecture