the tag is
        <literal>COPY <replaceable>rows</replaceable></literal> where
        <replaceable>rows</replaceable> is the number of rows copied.
        (Note: the row count appears only in
        <productname>PostgreSQL</productname> 8.2 and later.)
       </para>
       </listitem>
      </varlistentry>
     </variablelist>
    </listitem>
   </varlistentry>

   <varlistentry id="protocol-message-formats-CopyData">
    <term>CopyData (F &amp; B)</term>
    <listitem>
     <variablelist>
      <varlistentry>
       <term>Byte1('d')</term>
       <listitem>
        <para>
         Identifies the message as <command>COPY</command> data.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Int32</term>
       <listitem>
        <para>
         Length of message contents in bytes, including self.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Byte<replaceable>n</replaceable></term>
       <listitem>
        <para>
         Data that forms part of a <command>COPY</command> data stream.  Messages sent
         from the backend will always correspond to single data rows,
         but messages sent by frontends might divide the data stream
         arbitrarily.
        </para>
       </listitem>
      </varlistentry>
     </variablelist>
    </listitem>
   </varlistentry>

   <varlistentry id="protocol-message-formats-CopyDone">
    <term>CopyDone (F &amp; B)</term>
    <listitem>
     <variablelist>
      <varlistentry>
       <term>Byte1('c')</term>
       <listitem>
        <para>
         Identifies the message as a <command>COPY</command>-complete indicator.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Int32(4)</term>
       <listitem>
        <para>
         Length of message contents in bytes, including self.
        </para>
       </listitem>
      </varlistentry>
     </variablelist>
    </listitem>
   </varlistentry>

   <varlistentry id="protocol-message-formats-CopyFail">
    <term>CopyFail (F)</term>
    <listitem>
     <variablelist>
      <varlistentry>
       <term>Byte1('f')</term>
       <listitem>
        <para>
         Identifies the message as a <command>COPY</command>-failure indicator.
        </para>
       </listitem>
      </varlistentry>
      <varlistentry>
       <term>Int32</term>
       <listitem>
        <para>
         Length of message contents in bytes, including self.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>String</term>
       <listitem>
        <para>
         An error message to report as the cause of failure.
        </para>
       </listitem>
      </varlistentry>
     </variablelist>
    </listitem>
   </varlistentry>

   <varlistentry id="protocol-message-formats-CopyInResponse">
    <term>CopyInResponse (B)</term>
    <listitem>
     <variablelist>
      <varlistentry>
       <term>Byte1('G')</term>
       <listitem>
        <para>
         Identifies the message as a Start Copy In response.
         The frontend must now send copy-in data (if not
         prepared to do so, send a CopyFail message).
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Int32</term>
       <listitem>
        <para>
         Length of message contents in bytes, including self.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Int8</term>
       <listitem>
        <para>
         0 indicates the overall <command>COPY</command> format is textual (rows
         separated by newlines, columns separated by separator
         characters, etc.).
         1 indicates the overall copy format is binary (similar
         to DataRow format).
         See <xref linkend="sql-copy"/>
         for more information.
        </para>
       </listitem>
      </varlistentry>

      <varlistentry>
       <term>Int16</term>
       <listitem>
        <para>