Description of Htgrep :
Htgrep is a CGI script written in Perl that allows you to query any document accessible to your HTTP server on aparagraph-by-paragraph basis. Htgrep is a generic front-end to htgrep.pl, a Perl package that makes itrelatively easy to implement simple search engines for the WWW. Htgrep allows you to pass all parameters tothe search package as part of the URL, so a forms interface can be used to set the parameters.