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+<!-- doc/src/sgml/release.sgml -->
+<!--
+
+Typical markup:
+
+&<> use & escapes
+PostgreSQL <productname>
+postgresql.conf, pg_hba.conf <filename>
+\<[A-Z][A-Z_ ]+[A-Z_]\> <command>, <literal>, <envar>, <acronym>
+\<[A-Za-z_][A-Za-z0-9_]+() <function>
+\-\-?[A-Za-z_]+[-A-Za-z_]* <option> (use backslashes to avoid SGML markup)
+\<[A-Za-z_]+/[A-Za-z_]+\> <filename>
+psql <application>
+pg_[A-Za-z0-9_]+ <application>, <structname>
+\<[A-Z][A-Z][A-Z_ ]*\> <type>
+\<[a-z]+_[a-z_]+\> <varname>, <structfield>
+ <systemitem class="osname">
+
+non-ASCII characters find using grep -P '[\x80-\xFF]'
+ convert to HTML4 named entity (&) escapes
+
+ official: http://www.w3.org/TR/html4/sgml/entities.html
+ one page: http://www.zipcon.net/~swhite/docs/computers/browsers/entities_page.html
+ other lists: http://www.zipcon.net/~swhite/docs/computers/browsers/entities.html
+ http://www.zipcon.net/~swhite/docs/computers/browsers/entities_page.html
+ https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
+
+ We cannot use UTF8 because back branches still use SGML Docbook,
+ which does not support it. Also, rendering engines have to
+ support the referenced characters.
+
+ Do not use numeric _UTF_ numeric character escapes (&#nnn;),
+ we can only use Latin1.
+
+ Example: Alvaro Herrera is &Aacute;lvaro Herrera
+ Find non-ASCII characters (remove 'X'):
+ grep -X-color='auto' -P -n "[\x80-\xFF]"
+
+wrap long lines
+
+For new features, add links to the documentation sections.
+
+-->
+
+<appendix id="release">
+ <title>Release Notes</title>
+
+ <para>
+ The release notes contain the significant changes in each
+ <productname>PostgreSQL</productname> release, with major features and migration
+ issues listed at the top. The release notes do not contain changes
+ that affect only a few users or changes that are internal and therefore not
+ user-visible. For example, the optimizer is improved in almost every
+ release, but the improvements are usually observed by users as simply
+ faster queries.
+ </para>
+
+ <para>
+ A complete list of changes for each release can be obtained by
+ viewing the <link linkend="git">Git</link> logs for each release.
+ The <ulink
+ url="https://www.postgresql.org/list/pgsql-committers/"><literal>pgsql-committers</literal>
+ email list</ulink> records all source code changes as well. There is also
+ a <ulink url="https://git.postgresql.org/gitweb/?p=postgresql.git;a=summary">web
+ interface</ulink> that shows changes to specific files.
+ </para>
+
+ <para>
+ The name appearing next to each item represents the major developer for
+ that item. Of course all changes involve community discussion and patch
+ review, so each item is truly a community effort.
+ </para>
+
+<!--
+ When beginning a new major-release series, create a new release-NN.sgml
+ file, removing the previous one, and change the &-reference here.
+ Don't forget to update filelist.sgml.
+
+ The reason for keeping each branch's release notes in a differently-named
+ file is to reduce confusion when preparing minor-release updates.
+ All the active branches have to be edited concurrently when doing that.
+-->
+
+&release-15;
+
+ <sect1 id="release-prior">
+ <title>Prior Releases</title>
+
+ <para>
+ Release notes for prior release branches can be found at
+ <ulink url="https://www.postgresql.org/docs/release/"><literal>https://www.postgresql.org/docs/release/</literal></ulink>
+ </para>
+ </sect1>
+
+</appendix>