The matched number is a counter. Simply I<sets> the internal counter to this
value. Variants exist for C<COUNTER>, C<DERIVE>, and C<ABSOLUTE> data sources.
+=item B<GaugeAdd>
+
=item B<CounterAdd>
=item B<DeriveAdd>
matched number may be negative, which will effectively subtract from the
internal counter.
+=item B<GaugeInc>
+
=item B<CounterInc>
=item B<DeriveInc>
=back
+=head2 Plugin C<write_log>
+
+The I<write_log plugin> will send values to the configured log destination.
+It is meant to be used for testing purposes, to ensure that values
+are correctly reported. Values will be formatted in the I<graphite> format.
+
=head2 Plugin C<write_redis>
The I<write_redis plugin> submits values to I<Redis>, a data structure server.