[Zope] The zope howto/etc search interface

Using the search function on www.zope.org is often frustrating. I *know* the information is out there, I *remember* seeing this particular howto, yet, I type in words I think should find it, and I don't seem to have much luck. Is the zope search interface in use at zope.org open source? Is it something maybe I could look at and offer to help "fix" it so it'll work better for me and others? -- We're only in it for the volume. -- Black Sabbath