Features (stolen from Christophe Rhodes and others):
To add this lookup to your browser, try this link. Should work in Chrome and Firefox.
The lookup uses the URL http://www.xach.com/clhs?q=lookup term. If your browser supports "Smart Bookmarks" or "Keyword Shortcuts" or similar, you can use that URL as a temeplate for CLHS lookups. As with the plugin file, to use a customized HyperSpec location, add a base_url value to the query.