</variablelist>
<para>If multiple integers and units are specified the time
- values are summed up.</para>
+ values are summed up. If an integer is given witohut a unit,
+ s is assumed.
+ </para>
+
+ <para>When the age is set to zero, the files are cleaned
+ unconditionally.</para>
<para>The age field only applies to lines starting with
d, D and x. If omitted or set to - no automatic clean-up