@@ -235,22 +235,22 @@ VACUUM [ FULL ] [ FREEZE ] [ VERBOSE ] [ ANALYZE ] [ <replaceable class="paramet
235235 Perform index vacuum and index cleanup phases of <command>VACUUM</command>
236236 in parallel using <replaceable class="parameter">integer</replaceable>
237237 background workers (for the details of each vacuum phase, please
238- refer to <xref linkend="vacuum-phases"/>).In plain <command>VACUUM</command>
239- (without <literal>FULL</literal>), if the<literal>PARALLEL</literal> option
240- is omitted, then the number of workers isdetermined based on the number of
241- indexes on the relation that support parallel vacuum operation and is further
242- limited by <xref linkend="guc-max-parallel-maintenance-workers"/>. An index
243- can participate in parallel vacuum if and only if the size of the index is
244- more than <xref linkend="guc-min-parallel-index-scan-size"/>. Please note
245- that it is not guaranteed that the number of parallel workers specified in
246- <replaceable class="parameter">integer</replaceable> will be used during
247- execution. It is possible for a vacuum to run with fewer workers than
248- specified, or even with no workers at all. Only one worker can be used per
249- index. So parallel workers are launched only when there are at least
250- <literal>2</literal> indexes in the table. Workers for vacuum are launched
251- before the start of each phase and exit at the end of the phase. These
252- behaviors might change in a future release. This option can't be used with
253- the <literal>FULL</literal> option.
238+ refer to <xref linkend="vacuum-phases"/>).The number of workers used
239+ to perform the operation is equal to thenumber of indexes on the
240+ relation that support parallel vacuum which islimited by the number of
241+ workers specified with <literal>PARALLEL</literal> option if any which is
242+ further limited by <xref linkend="guc-max-parallel-maintenance-workers"/>.
243+ An index can participate in parallel vacuum if and only if the size of the
244+ index is more than <xref linkend="guc-min-parallel-index-scan-size"/>.
245+ Please note that it is not guaranteed that the number of parallel workers
246+ specified in <replaceable class="parameter">integer</replaceable> will be
247+ used during execution. It is possible for a vacuum to run with fewer
248+ workers than specified, or even with no workers at all. Only one worker
249+ can be used per index. So parallel workers are launched only when there
250+ are at least <literal>2</literal> indexes in the table. Workers for
251+ vacuum are launched before the start of each phase and exit at the end of
252+ the phase. These behaviors might change in a future release. This
253+ option can't be used with the <literal>FULL</literal> option.
254254 </para>
255255 </listitem>
256256 </varlistentry>
