<listitem><para>Configure the hardware watchdog at runtime and at reboot. Takes a timeout value in
seconds (or in other time units if suffixed with <literal>ms</literal>, <literal>min</literal>,
- <literal>h</literal>, <literal>d</literal>, <literal>w</literal>). If set to zero the watchdog logic
- is disabled: no watchdog device is opened, configured, or pinged. If set to the special string
- <literal>default</literal> the watchdog is opened and pinged in regular intervals, but the timeout
- is not changed from the default. If set to any other time value the watchdog timeout is configured to
- the specified value (or a value close to it, depending on hardware capabilities).</para>
+ <literal>h</literal>, <literal>d</literal>, <literal>w</literal>), or the special strings
+ <literal>off</literal> or <literal>default</literal>. If set to <literal>off</literal>
+ (alternatively: <literal>0</literal>) the watchdog logic is disabled: no watchdog device is opened,
+ configured, or pinged. If set to the special string <literal>default</literal> the watchdog is opened
+ and pinged in regular intervals, but the timeout is not changed from the default. If set to any other
+ time value the watchdog timeout is configured to the specified value (or a value close to it,
+ depending on hardware capabilities).</para>
<para>If <varname>RuntimeWatchdogSec=</varname> is set to a non-zero value, the watchdog hardware
(<filename>/dev/watchdog</filename> or the path specified with <varname>WatchdogDevice=</varname> or