References:
		
* Charming Python: Developing a full-text indexer in Python		
  http://tinyurl.com/2jcbv
  David Mertz, Ph.D. (mertz@gnosis.cx)
  Wanderer, Gnosis Software, Inc.
  1 May 2001

* Survey of search software, some free, some not.
  http://www.oobdoo.com/directory/Computers/Software/Internet/Servers/Search/

* How to Index Anything, by Josh Rabinowitz
  http://www.linuxjournal.com/article.php?sid=6652
  See also http://swish-e.org/.

* Perlfect search.
  http://www.perlfect.com/freescripts/search/

* Harvest
  http://harvest.sourceforge.net/