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Answer» Some site has a .php extention instead of .html .
Does that specifically signifies anything?It means that the page is probebly useing PHP, see http://www.php.net.Yup. >PHP< MAKES it possible to run programs on web servers so that pages are automatically changed. If you LOOK at the URLs on this site, you'll see a ".cgi" in there instead of ".html". CGI TENDS to INDICATE Perl programming - Perl is a scripting language in much the same way that PHP is.
Scripting is necessary, because it would be utterly impossible, for example, for someone to re-write all the relevant pages on this site, every time someone posted a MESSAGE...
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