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1st chunk of `doc/src/sgml/appendix-obsolete-default-roles.sgml`
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<!-- doc/src/sgml/appendix-obsolete-default-roles.sgml -->
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  See doc/src/sgml/appendix-obsolete.sgml for why this file exists. Do not change the id attribute.
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<sect1 id="default-roles" xreflabel="default-roles">
  <title>Default Roles Renamed to Predefined Roles</title>

   <indexterm>
     <primary>default-roles</primary>
   </indexterm>

   <para>
    PostgreSQL 13 and below used the term <quote>Default Roles</quote>.  However, as these
    roles are not able to actually be changed and are installed as part of the
    system at initialization time, the more appropriate term to use is <quote>Predefined Roles</quote>.
    See <xref linkend="predefined-roles"/> for current documentation regarding
    Predefined Roles, and <link linkend="release-prior">the release notes for
    PostgreSQL 14</link> for details on this change.
   </para>

</sect1>
Title: Default Roles Renamed to Predefined Roles
Summary
PostgreSQL has renamed 'Default Roles' to 'Predefined Roles' due to their immutable nature, as these roles are installed during system initialization and cannot be altered, with more information available in the documentation for Predefined Roles and the PostgreSQL 14 release notes for details on this change.