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Preliminary release notes for upcoming back branch releases.

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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.584 2008/06/08 21:46:07 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.585 2008/09/17 20:57:35 tgl Exp $ -->
<!--
Typical markup:
......@@ -63,6 +63,360 @@ do it for earlier branch release files.
review, so each item is truly a community effort.
</para>
<sect1 id="release-8-3-4">
<title>Release 8.3.4</title>
<note>
<title>Release date</title>
<simpara>2008-09-22</simpara>
</note>
<para>
This release contains a variety of fixes from 8.3.3.
For information about new features in the 8.3 major release, see
<xref linkend="release-8-3">.
</para>
<sect2>
<title>Migration to Version 8.3.4</title>
<para>
A dump/restore is not required for those running 8.3.X.
However, if you are upgrading from a version earlier than 8.3.1,
see the release notes for 8.3.1.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Fix bug in btree WAL recovery code (Heikki)
</para>
<para>
Recovery failed if the WAL ended partway through a page split operation.
</para>
</listitem>
<listitem>
<para>
Fix potential use of wrong cutoff XID for HOT page pruning (Alvaro)
</para>
<para>
This error created a risk of corruption in system
catalogs that are consulted by <command>VACUUM</>: dead tuple versions
might be removed too soon. The impact of this on actual database
operations would be minimal, since the system doesn't follow MVCC
rules while examining catalogs, but it might result in transiently
wrong output from <application>pg_dump</> or other client programs.
</para>
</listitem>
<listitem>
<para>
Fix potential miscalculation of <structfield>datfrozenxid</> (Alvaro)
</para>
<para>
This error may explain some recent reports of failure to remove old
<structname>pg_clog</> data.
</para>
</listitem>
<listitem>
<para>
Fix incorrect HOT updates after <structname>pg_class</> is reindexed
(Tom)
</para>
<para>
Corruption of <structname>pg_class</> could occur if <literal>REINDEX
TABLE pg_class</> was followed in the same session by an <literal>ALTER
TABLE RENAME</> or <literal>ALTER TABLE SET SCHEMA</> command.
</para>
</listitem>
<listitem>
<para>
Fix missed <quote>combo cid</> case (Karl Schnaitter)
</para>
<para>
This error made rows incorrectly invisible to a transaction in which they
had been deleted by multiple subtransactions that all aborted.
</para>
</listitem>
<listitem>
<para>
Prevent autovacuum from crashing if the table it's currently
checking is deleted at just the wrong time (Alvaro)
</para>
</listitem>
<listitem>
<para>
Widen local lock counters from 32 to 64 bits (Tom)
</para>
<para>
This responds to reports that the counters could overflow in
sufficiently long transactions, leading to unexpected <quote>lock is
already held</> errors.
</para>
</listitem>
<listitem>
<para>
Fix possible duplicate output of tuples during a GiST index scan (Teodor)
</para>
</listitem>
<listitem>
<para>
Regenerate foreign key checking queries from scratch when either
table is modified (Tom)
</para>
<para>
Previously, 8.3 would attempt to replan the query, but would work from
previously generated query text. This led to failures if a
table or column was renamed.
</para>
</listitem>
<listitem>
<para>
Fix missed permissions checks when a view contains a simple
<literal>UNION ALL</> construct (Heikki)
</para>
<para>
Permissions for the referenced tables were checked properly, but not
permissions for the view itself.
</para>
</listitem>
<listitem>
<para>
Add checks in executor startup to ensure that the tuples produced by an
<command>INSERT</> or <command>UPDATE</> will match the target table's
current rowtype (Tom)
</para>
<para>
This situation is believed to be impossible in 8.3, but it can happen in
prior releases, so a check seems prudent.
</para>
</listitem>
<listitem>
<para>
Fix possible repeated drops during <command>DROP OWNED</> (Tom)
</para>
<para>
This would typically result in strange errors such as <quote>cache
lookup failed for relation NNN</>.
</para>
</listitem>
<listitem>
<para>
Fix several memory leaks in XML operations (Kris Jurka, Tom)
</para>
</listitem>
<listitem>
<para>
Fix <function>xmlserialize()</> to raise error properly for
unacceptable target data type (Tom)
</para>
</listitem>
<listitem>
<para>
Fix a couple of places that mis-handled multibyte characters in text
search configuration file parsing (Tom)
</para>
<para>
Certain characters occurring in configuration files would always cause
<quote>invalid byte sequence for encoding</> failures.
</para>
</listitem>
<listitem>
<para>
Provide file name and line number location for all errors reported
in text search configuration files (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <literal>AT TIME ZONE</> to first try to interpret its timezone
argument as a timezone abbreviation, and only try it as a full timezone
name if that fails, rather than the other way around as formerly (Tom)
</para>
<para>
The timestamp input functions have always resolved ambiguous zone names
in this order. Making <literal>AT TIME ZONE</> do so as well improves
consistency, and fixes a compatibility bug introduced in 8.1:
in ambiguous cases we now behave the same as 8.0 and before did,
since in the older versions <literal>AT TIME ZONE</> accepted
<emphasis>only</> abbreviations.
</para>
</listitem>
<listitem>
<para>
Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</para>
</listitem>
<listitem>
<para>
Prevent integer overflows during units conversion when displaying a
configuration parameter that has units (Tom)
</para>
</listitem>
<listitem>
<para>
Improve performance of writing very long log messages to syslog (Tom)
</para>
</listitem>
<listitem>
<para>
Allow spaces in the suffix part of an LDAP URL in
<filename>pg_hba.conf</> (Tom)
</para>
</listitem>
<listitem>
<para>
Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
ON</> query (Tom)
</para>
</listitem>
<listitem>
<para>
Fix planner bug that could improperly push down <literal>IS NULL</>
tests below an outer join (Tom)
</para>
<para>
This was triggered by occurrence of <literal>IS NULL</> tests for
the same relation in all arms of an upper <literal>OR</> clause.
</para>
</listitem>
<listitem>
<para>
Fix planner bug with nested sub-select expressions (Tom)
</para>
<para>
If the outer sub-select has no direct dependency on the parent query,
but the inner one does, the outer value might not get recalculated
for new parent query rows.
</para>
</listitem>
<listitem>
<para>
Fix planner to estimate that <literal>GROUP BY</> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</para>
<para>
This is very substantially more accurate than the regular <literal>GROUP
BY</> estimate for certain boolean tests like <replaceable>col</>
<literal>IS NULL</>.
</para>
</listitem>
<listitem>
<para>
Fix PL/PgSQL to not fail when a <literal>FOR</> loop's target variable
is a record containing composite-type fields (Tom)
</para>
</listitem>
<listitem>
<para>
Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
about the encoding of data sent to or from Tcl (Tom)
</para>
</listitem>
<listitem>
<para>
Improve performance of <function>PQescapeBytea()</> (Rudolf Leitgeb)
</para>
</listitem>
<listitem>
<para>
On Windows, work around a Microsoft bug by preventing
<application>libpq</> from trying to send more than 64kB per system call
(Magnus)
</para>
</listitem>
<listitem>
<para>
Fix <application>ecpg</> to handle variables properly in <command>SET</>
commands (Michael)
</para>
</listitem>
<listitem>
<para>
Improve <application>pg_dump</> and <application>pg_restore</>'s
error reporting after failure to send a SQL command (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to properly preserve postmaster
command-line arguments across a <literal>restart</> (Bruce)
</para>
</listitem>
<listitem>
<para>
Fix erroneous WAL file cutoff point calculation in
<application>pg_standby</> (Simon)
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008f (for
DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
Pakistan, Palestine, and Paraguay)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-8-3-3">
<title>Release 8.3.3</title>
......@@ -3416,6 +3770,238 @@ current_date &lt; 2017-11-17
</sect2>
</sect1>
<sect1 id="release-8-2-10">
<title>Release 8.2.10</title>
<note>
<title>Release date</title>
<simpara>2008-09-22</simpara>
</note>
<para>
This release contains a variety of fixes from 8.2.9.
For information about new features in the 8.2 major release, see
<xref linkend="release-8-2">.
</para>
<sect2>
<title>Migration to Version 8.2.10</title>
<para>
A dump/restore is not required for those running 8.2.X.
However, if you are upgrading from a version earlier than 8.2.7,
see the release notes for 8.2.7.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Fix bug in btree WAL recovery code (Heikki)
</para>
<para>
Recovery failed if the WAL ended partway through a page split operation.
</para>
</listitem>
<listitem>
<para>
Fix potential miscalculation of <structfield>datfrozenxid</> (Alvaro)
</para>
<para>
This error may explain some recent reports of failure to remove old
<structname>pg_clog</> data.
</para>
</listitem>
<listitem>
<para>
Widen local lock counters from 32 to 64 bits (Tom)
</para>
<para>
This responds to reports that the counters could overflow in
sufficiently long transactions, leading to unexpected <quote>lock is
already held</> errors.
</para>
</listitem>
<listitem>
<para>
Fix possible duplicate output of tuples during a GiST index scan (Teodor)
</para>
</listitem>
<listitem>
<para>
Fix missed permissions checks when a view contains a simple
<literal>UNION ALL</> construct (Heikki)
</para>
<para>
Permissions for the referenced tables were checked properly, but not
permissions for the view itself.
</para>
</listitem>
<listitem>
<para>
Add checks in executor startup to ensure that the tuples produced by an
<command>INSERT</> or <command>UPDATE</> will match the target table's
current rowtype (Tom)
</para>
<para>
<command>ALTER COLUMN TYPE</>, followed by re-use of a previously
cached plan, could produce this type of situation. The check protects
against data corruption and/or crashes that could ensue.
</para>
</listitem>
<listitem>
<para>
Fix possible repeated drops during <command>DROP OWNED</> (Tom)
</para>
<para>
This would typically result in strange errors such as <quote>cache
lookup failed for relation NNN</>.
</para>
</listitem>
<listitem>
<para>
Fix <literal>AT TIME ZONE</> to first try to interpret its timezone
argument as a timezone abbreviation, and only try it as a full timezone
name if that fails, rather than the other way around as formerly (Tom)
</para>
<para>
The timestamp input functions have always resolved ambiguous zone names
in this order. Making <literal>AT TIME ZONE</> do so as well improves
consistency, and fixes a compatibility bug introduced in 8.1:
in ambiguous cases we now behave the same as 8.0 and before did,
since in the older versions <literal>AT TIME ZONE</> accepted
<emphasis>only</> abbreviations.
</para>
</listitem>
<listitem>
<para>
Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</para>
</listitem>
<listitem>
<para>
Prevent integer overflows during units conversion when displaying a
configuration parameter that has units (Tom)
</para>
</listitem>
<listitem>
<para>
Improve performance of writing very long log messages to syslog (Tom)
</para>
</listitem>
<listitem>
<para>
Allow spaces in the suffix part of an LDAP URL in
<filename>pg_hba.conf</> (Tom)
</para>
</listitem>
<listitem>
<para>
Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
ON</> query (Tom)
</para>
</listitem>
<listitem>
<para>
Fix planner bug with nested sub-select expressions (Tom)
</para>
<para>
If the outer sub-select has no direct dependency on the parent query,
but the inner one does, the outer value might not get recalculated
for new parent query rows.
</para>
</listitem>
<listitem>
<para>
Fix planner to estimate that <literal>GROUP BY</> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</para>
<para>
This is very substantially more accurate than the regular <literal>GROUP
BY</> estimate for certain boolean tests like <replaceable>col</>
<literal>IS NULL</>.
</para>
</listitem>
<listitem>
<para>
Fix PL/PgSQL to not fail when a <literal>FOR</> loop's target variable
is a record containing composite-type fields (Tom)
</para>
</listitem>
<listitem>
<para>
Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
about the encoding of data sent to or from Tcl (Tom)
</para>
</listitem>
<listitem>
<para>
On Windows, work around a Microsoft bug by preventing
<application>libpq</> from trying to send more than 64kB per system call
(Magnus)
</para>
</listitem>
<listitem>
<para>
Improve <application>pg_dump</> and <application>pg_restore</>'s
error reporting after failure to send a SQL command (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to properly preserve postmaster
command-line arguments across a <literal>restart</> (Bruce)
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008f (for
DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
Pakistan, Palestine, and Paraguay)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-8-2-9">
<title>Release 8.2.9</title>
......@@ -7408,50 +7994,226 @@ current_date &lt; 2017-11-17
</itemizedlist>
</listitem>
<listitem>
<para>
Improvements to cube module (Joshua Reich)
</para>
<listitem>
<para>
Improvements to cube module (Joshua Reich)
</para>
<para>
New functions are <function>cube(float[])</>,
<function>cube(float[], float[])</>, and
<function>cube_subset(cube, int4[])</>.
</para>
</listitem>
<listitem>
<para>
Add async query capability to dblink (Kai Londenberg,
Joe Conway)
</para>
</listitem>
<listitem>
<para>
New operators for array-subset comparisons (<literal>@&gt;</>,
<literal>&lt;@</>, <literal>&amp;&amp;</>) (Tom)
</para>
<para>
Various contrib packages already had these operators for their
datatypes, but the naming wasn't consistent. We have now added
consistently named array-subset comparison operators to the core code
and all the contrib packages that have such functionality.
(The old names remain available, but are deprecated.)
</para>
</listitem>
<listitem>
<para>
Add uninstall scripts for all contrib packages that have install
scripts (David, Josh Drake)
</para>
</listitem>
</itemizedlist>
</sect3>
</sect2>
</sect1>
<sect1 id="release-8-1-14">
<title>Release 8.1.14</title>
<note>
<title>Release date</title>
<simpara>2008-09-22</simpara>
</note>
<para>
This release contains a variety of fixes from 8.1.13.
For information about new features in the 8.1 major release, see
<xref linkend="release-8-1">.
</para>
<sect2>
<title>Migration to Version 8.1.14</title>
<para>
A dump/restore is not required for those running 8.1.X.
However, if you are upgrading from a version earlier than 8.1.2,
see the release notes for 8.1.2.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Widen local lock counters from 32 to 64 bits (Tom)
</para>
<para>
This responds to reports that the counters could overflow in
sufficiently long transactions, leading to unexpected <quote>lock is
already held</> errors.
</para>
</listitem>
<listitem>
<para>
Fix possible duplicate output of tuples during a GiST index scan (Teodor)
</para>
</listitem>
<listitem>
<para>
Add checks in executor startup to ensure that the tuples produced by an
<command>INSERT</> or <command>UPDATE</> will match the target table's
current rowtype (Tom)
</para>
<para>
<command>ALTER COLUMN TYPE</>, followed by re-use of a previously
cached plan, could produce this type of situation. The check protects
against data corruption and/or crashes that could ensue.
</para>
</listitem>
<listitem>
<para>
Fix <literal>AT TIME ZONE</> to first try to interpret its timezone
argument as a timezone abbreviation, and only try it as a full timezone
name if that fails, rather than the other way around as formerly (Tom)
</para>
<para>
The timestamp input functions have always resolved ambiguous zone names
in this order. Making <literal>AT TIME ZONE</> do so as well improves
consistency, and fixes a compatibility bug introduced in 8.1:
in ambiguous cases we now behave the same as 8.0 and before did,
since in the older versions <literal>AT TIME ZONE</> accepted
<emphasis>only</> abbreviations.
</para>
</listitem>
<para>
New functions are <function>cube(float[])</>,
<function>cube(float[], float[])</>, and
<function>cube_subset(cube, int4[])</>.
</para>
</listitem>
<listitem>
<para>
Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</para>
</listitem>
<listitem>
<para>
Add async query capability to dblink (Kai Londenberg,
Joe Conway)
</para>
</listitem>
<listitem>
<para>
Improve performance of writing very long log messages to syslog (Tom)
</para>
</listitem>
<listitem>
<para>
New operators for array-subset comparisons (<literal>@&gt;</>,
<literal>&lt;@</>, <literal>&amp;&amp;</>) (Tom)
</para>
<listitem>
<para>
Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
ON</> query (Tom)
</para>
</listitem>
<para>
Various contrib packages already had these operators for their
datatypes, but the naming wasn't consistent. We have now added
consistently named array-subset comparison operators to the core code
and all the contrib packages that have such functionality.
(The old names remain available, but are deprecated.)
</para>
</listitem>
<listitem>
<para>
Fix planner bug with nested sub-select expressions (Tom)
</para>
<listitem>
<para>
Add uninstall scripts for all contrib packages that have install
scripts (David, Josh Drake)
</para>
</listitem>
<para>
If the outer sub-select has no direct dependency on the parent query,
but the inner one does, the outer value might not get recalculated
for new parent query rows.
</para>
</listitem>
</itemizedlist>
<listitem>
<para>
Fix planner to estimate that <literal>GROUP BY</> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</para>
</sect3>
<para>
This is very substantially more accurate than the regular <literal>GROUP
BY</> estimate for certain boolean tests like <replaceable>col</>
<literal>IS NULL</>.
</para>
</listitem>
<listitem>
<para>
Fix PL/PgSQL to not fail when a <literal>FOR</> loop's target variable
is a record containing composite-type fields (Tom)
</para>
</listitem>
<listitem>
<para>
Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
about the encoding of data sent to or from Tcl (Tom)
</para>
</listitem>
<listitem>
<para>
Fix PL/Python to work with Python 2.5
</para>
<para>
This is a back-port of fixes made during the 8.2 development cycle.
</para>
</listitem>
<listitem>
<para>
Improve <application>pg_dump</> and <application>pg_restore</>'s
error reporting after failure to send a SQL command (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to properly preserve postmaster
command-line arguments across a <literal>restart</> (Bruce)
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008f (for
DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
Pakistan, Palestine, and Paraguay)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
......@@ -11201,6 +11963,140 @@ psql -t -f fixseq.sql db1 | psql -e db1
</sect2>
</sect1>
<sect1 id="release-8-0-18">
<title>Release 8.0.18</title>
<note>
<title>Release date</title>
<simpara>2008-09-22</simpara>
</note>
<para>
This release contains a variety of fixes from 8.0.17.
For information about new features in the 8.0 major release, see
<xref linkend="release-8-0">.
</para>
<sect2>
<title>Migration to Version 8.0.18</title>
<para>
A dump/restore is not required for those running 8.0.X.
However, if you are upgrading from a version earlier than 8.0.6,
see the release notes for 8.0.6.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Widen local lock counters from 32 to 64 bits (Tom)
</para>
<para>
This responds to reports that the counters could overflow in
sufficiently long transactions, leading to unexpected <quote>lock is
already held</> errors.
</para>
</listitem>
<listitem>
<para>
Add checks in executor startup to ensure that the tuples produced by an
<command>INSERT</> or <command>UPDATE</> will match the target table's
current rowtype (Tom)
</para>
<para>
<command>ALTER COLUMN TYPE</>, followed by re-use of a previously
cached plan, could produce this type of situation. The check protects
against data corruption and/or crashes that could ensue.
</para>
</listitem>
<listitem>
<para>
Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</para>
</listitem>
<listitem>
<para>
Improve performance of writing very long log messages to syslog (Tom)
</para>
</listitem>
<listitem>
<para>
Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
ON</> query (Tom)
</para>
</listitem>
<listitem>
<para>
Fix planner to estimate that <literal>GROUP BY</> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</para>
<para>
This is very substantially more accurate than the regular <literal>GROUP
BY</> estimate for certain boolean tests like <replaceable>col</>
<literal>IS NULL</>.
</para>
</listitem>
<listitem>
<para>
Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
about the encoding of data sent to or from Tcl (Tom)
</para>
</listitem>
<listitem>
<para>
Fix PL/Python to work with Python 2.5
</para>
<para>
This is a back-port of fixes made during the 8.2 development cycle.
</para>
</listitem>
<listitem>
<para>
Improve <application>pg_dump</> and <application>pg_restore</>'s
error reporting after failure to send a SQL command (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to properly preserve postmaster
command-line arguments across a <literal>restart</> (Bruce)
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008f (for
DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
Pakistan, Palestine, and Paraguay)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-8-0-17">
<title>Release 8.0.17</title>
......@@ -15349,6 +16245,82 @@ typedefs (Michael)</para></listitem>
</sect2>
</sect1>
<sect1 id="release-7-4-22">
<title>Release 7.4.22</title>
<note>
<title>Release date</title>
<simpara>2008-09-22</simpara>
</note>
<para>
This release contains a variety of fixes from 7.4.21.
For information about new features in the 7.4 major release, see
<xref linkend="release-7-4">.
</para>
<sect2>
<title>Migration to Version 7.4.22</title>
<para>
A dump/restore is not required for those running 7.4.X.
However, if you are upgrading from a version earlier than 7.4.11,
see the release notes for 7.4.11.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</para>
</listitem>
<listitem>
<para>
Improve performance of writing very long log messages to syslog (Tom)
</para>
</listitem>
<listitem>
<para>
Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
ON</> query (Tom)
</para>
</listitem>
<listitem>
<para>
Fix planner to estimate that <literal>GROUP BY</> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</para>
<para>
This is very substantially more accurate than the regular <literal>GROUP
BY</> estimate for certain boolean tests like <replaceable>col</>
<literal>IS NULL</>.
</para>
</listitem>
<listitem>
<para>
Improve <application>pg_dump</> and <application>pg_restore</>'s
error reporting after failure to send a SQL command (Tom)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-7-4-21">
<title>Release 7.4.21</title>
......
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