set of units to be enabled/disabled even before
installing the actual package.</para>
+ <para>For more information on the preset logic please
+ have a look at the <ulink
+ url="http://freedesktop.org/wiki/Software/systemd/Preset">Presets</ulink>
+ document.</para>
+
<para>It is not recommended to ship preset files
within the respective software packages implementing
the units, but rather centralize them in a