+ <refsect1>
+ <title>History</title>
+
+ <para><function>sd_journal_open()</function>,
+ <function>sd_journal_close()</function>,
+ <constant>SD_JOURNAL_LOCAL_ONLY</constant>,
+ <constant>SD_JOURNAL_RUNTIME_ONLY</constant>,
+ <constant>SD_JOURNAL_SYSTEM_ONLY</constant> were added
+ in systemd-38.</para>
+
+ <para><function>sd_journal_open_directory()</function>
+ was added in systemd-187.</para>
+
+ <para><constant>SD_JOURNAL_SYSTEM</constant>,
+ <constant>SD_JOURNAL_CURRENT_USER</constant>,
+ and <function>sd_journal_open_files()</function>
+ were added in systemd-205.
+ <constant>SD_JOURNAL_SYSTEM_ONLY</constant>
+ was deprecated.</para>
+ </refsect1>
+