- the bounding sets are merged. If the empty
- string is assigned to this option the
- bounding set is reset, and all prior
- settings have no
- effect.</para></listitem>
+ the bounding sets are merged. If the
+ empty string is assigned to this
+ option the bounding set is reset to
+ the empty capability set, and all
+ prior settings have no effect. If set
+ to <literal>~</literal> (without any
+ further argument) the bounding set is
+ reset to the full set of available
+ capabilities, also undoing any
+ previous settings.</para></listitem>