- <para><filename>systemd-hibernate-resume</filename> only supports
- the in-kernel hibernation implementation, known as swsusp.
- Internally, it works by writing the major:minor of specified
- device node to <filename>/sys/power/resume</filename>.</para>
+ <para><filename>systemd-hibernate-resume</filename> only supports
+ the in-kernel hibernation implementation, known as
+ <ulink url="https://www.kernel.org/doc/Documentation/power/swsusp.txt">swsusp</ulink>.
+ Internally, it works by writing the major:minor of specified
+ device node to <filename>/sys/power/resume</filename>.</para>