Change underscore to hyphen
</ul></pd>
</plentry>
<plentry>
- <pt>--mirror_mode={group|spread}</pt>
+ <pt>--mirror-mode={group|spread}</pt>
<pd>Use this option to specify the placement of mirror segment instances on the
segment hosts. The default, <codeph>group</codeph>, groups the mirror
segments for all of a host's primary segments on a single alternate host.
