</para>
</listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><varname>DOCUMENTATION=</varname></term>
+ <listitem>
+ <para>A documentation URL with further information about the topic of the log message. Tools such
+ as <command>journalctl</command> will include a hyperlink to an URL specified this way in their
+ output. Should be a <literal>http://</literal>, <literal>https://</literal>,
+ <literal>file:/</literal>, <literal>man:</literal> or <literal>info:</literal> URL.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
<varlistentry>
<term><varname>_LINE_BREAK=</varname></term>
<listitem>
- <para>Only applies to <literal>_TRANSPORT=stdout</literal> records: indicates that the log message in the
- standard output/error stream was not terminated with a normal newline character (<literal>\n</literal>,
- i.e. ASCII 10). Specifically, when set this field is one of <option>nul</option> (in case the line was
- terminated by a NUL byte), <option>line-max</option> (in case the maximum log line length was reached, as
- configured with <varname>LineMax=</varname> in
- <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>) or
- <option>eof</option> (if this was the last log record of a stream and the stream ended without a final
- newline character). Note that this record is not generated when a normal newline character was used for
- marking the log line end.</para>
+ <para>Only applies to <literal>_TRANSPORT=stdout</literal> records: indicates that the log message
+ in the standard output/error stream was not terminated with a normal newline character
+ (<literal>\n</literal>, i.e. ASCII 10). Specifically, when set this field is one of
+ <option>nul</option> (in case the line was terminated by a NUL byte), <option>line-max</option> (in
+ case the maximum log line length was reached, as configured with <varname>LineMax=</varname> in
+ <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>),
+ <option>eof</option> (if this was the last log record of a stream and the stream ended without a
+ final newline character), or <option>pid-change</option> (if the process which generated the log
+ output changed in the middle of a line). Note that this record is not generated when a normal
+ newline character was used for marking the log line end.</para>
</listitem>
</varlistentry>
<varlistentry>
structured log entries via calls such as
<citerefentry><refentrytitle>sd_journal_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
They may also not be used as matches for
- <citerefentry><refentrytitle>sd_journal_add_match</refentrytitle><manvolnum>3</manvolnum></citerefentry></para>
+ <citerefentry><refentrytitle>sd_journal_add_match</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ </para>
<variablelist class='journal-directives'>
<varlistentry>