In release-14.sgml:
<!--
Author: Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi>
2021-03-04 [3174d69fb] Remove server and libpq support for old FE/BE protocol v
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<para>
Remove server and <link linkend="libpq">libpq</link> support
for the version 2 <link linkend="protocol">wire protocol</link>
(Heikki Linnakangas)
</para>
<para>
This was last used as the default in Postgres 7.2 (year 2002).
</para>
</listitem>
I thought the last version which used the protocol as the default was
7.3, not 7.2? Because v3 was introduced in 7.4.
Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp