If I wanted to have a page that presented the Lucene search engine (a la the Google home page), what is the ‘right’ way to do this?
I’m guessing that it’s to #include Main.Search ?
Check how it's done in the default XWiki XAR. Go to the search page and you'll find a link to the experimental lucene search page (Main.LuceneSearch from the top of my head). Edit that page to see how it's done.
You can also include it directly if you don't need to change it.
-Vincent