-All Debian based systems use
-http://en.wikipedia.org/wiki/Advanced_Packaging_Tool[APT] as package
-management tool. The list of repositories is defined in
-`/etc/apt/sources.list` and `.list` files found inside
-`/etc/apt/sources.d/`. Updates can be installed directly using
-`apt-get`, or via the GUI.
-
-Apt `sources.list` files list one package repository per line, with
-the most preferred source listed first. Empty lines are ignored, and a
-`#` character anywhere on a line marks the remainder of that line as a
-comment. The information available from the configured sources is
-acquired by `apt-get update`.
+{pve} uses http://en.wikipedia.org/wiki/Advanced_Packaging_Tool[APT] as its
+package management tool like any other Debian-based system. Repositories are
+defined in the file `/etc/apt/sources.list` and in `.list` files placed in
+`/etc/apt/sources.list.d/`.
+
+Each line defines a package repository. The preferred source must come first.
+Empty lines are ignored. A `#` character anywhere on a line marks the remainder
+of that line as a comment. The available packages from a repository are acquired
+by running `apt-get update`. Updates can be installed directly using `apt-get`,
+or via the GUI.