<varlistentry>
        <term><replaceable class="parameter">XXX/XXX</replaceable></term>
        <listitem>
         <para>
          The WAL location to begin streaming at.
         </para>
        </listitem>
       </varlistentry>

       <varlistentry>
        <term><replaceable class="parameter">option_name</replaceable></term>
        <listitem>
         <para>
          The name of an option passed to the slot's logical decoding output
          plugin.  See <xref linkend="protocol-logical-replication"/> for
          options that are accepted by the standard (<literal>pgoutput</literal>)
          plugin.
         </para>
        </listitem>
       </varlistentry>

       <varlistentry>
        <term><replaceable class="parameter">option_value</replaceable></term>
        <listitem>
         <para>
          Optional value, in the form of a string constant, associated with the
          specified option.
         </para>
        </listitem>
       </varlistentry>
      </variablelist>
     </listitem>
    </varlistentry>

    <varlistentry id="protocol-replication-drop-replication-slot">
     <term>
      <literal>DROP_REPLICATION_SLOT</literal> <replaceable class="parameter">slot_name</replaceable> <optional> <literal>WAIT</literal> </optional>
      <indexterm><primary>DROP_REPLICATION_SLOT</primary></indexterm>
     </term>
     <listitem>
      <para>
       Drops a replication slot, freeing any reserved server-side resources.
      </para>

      <variablelist>
       <varlistentry>
        <term><replaceable class="parameter">slot_name</replaceable></term>
        <listitem>
         <para>
          The name of the slot to drop.
         </para>
        </listitem>
       </varlistentry>

       <varlistentry>
        <term><literal>WAIT</literal></term>
        <listitem>
         <para>
          This option causes the command to wait if the slot is active until
          it becomes inactive, instead of the default behavior of raising an
          error.
         </para>
        </listitem>
       </varlistentry>
      </variablelist>
     </listitem>
    </varlistentry>

    <varlistentry id="protocol-replication-upload-manifest">
     <term>
      <literal>UPLOAD_MANIFEST</literal>
      <indexterm><primary>UPLOAD_MANIFEST</primary></indexterm>
     </term>
     <listitem>
      <para>
       Uploads a backup manifest in preparation for taking an incremental
       backup.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="protocol-replication-base-backup" xreflabel="BASE_BACKUP">
     <term><literal>BASE_BACKUP</literal> [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ]
      <indexterm><primary>BASE_BACKUP</primary></indexterm>
     </term>
     <listitem>
      <para>
       Instructs the server to start streaming a base backup.
       The system will automatically be put in backup mode before the backup
       is started, and taken out of it when the backup is complete. The
       following options are accepted:

       <variablelist>
        <varlistentry>
         <term><literal>LABEL</literal> <replaceable>'label'</replaceable></term>
         <listitem>
          <para>
           Sets the label of the backup. If none is specified, a backup label
           of <literal>base backup</literal> will be used. The quoting rules
           for the label are the same as a standard SQL string with
           <xref linkend="guc-standard-conforming-strings"/> turned on.
          </para>
         </listitem>
        </varlistentry>

        <varlistentry>
         <term><literal>TARGET</literal> <replaceable>'target'</replaceable></term>
         <listitem>
          <para>
           Tells the server where to send the backup.  If the target is
           <literal>client</literal>, which is the default, the backup data is
           sent to the client. If it is <literal>server</literal>, the backup
           data is written to the server at the pathname specified by the