The SearchHighLight 
Help:WikiPlugin is an Help:ActionPage plugin,
which is only used internally.
When someone is referred from a search engine like Google, Yahoo
or our own fulltextsearch, the terms the user searched for are highlighted.
See also 
http://wordpress.org/about/shots/1.2/plugins.png
Plugin Arguments
| s: | The search term |
|---|---|
| case_exact: | boolean. |
| regex: | boolean. |