About libferris: witme.sourceforge.net/libferris.web
Extended Attributes Table: witme.sourceforge.net/libferris.web/research/eadescriptions.html
Xapian::QueryParser Syntax: www.xapian.org/docs/queryparser.html
libferris FAQs: witme.sourceforge.net/libferris.web/research/faq.html#relativetime, witme.sourceforge.net/libferris.web/research/faq.html#pgplsqltsearch2 and witme.sourceforge.net/libferris.web/research/faq.html#agents
