Server Side Includes allow you to imbed special tags in order for your
server to parse this document and replace these tags with the information
you requested to beplaced there, whether it be a CGI script, command, or
even an environment variable. This all occurs on the server side, which
means that when the document reaches the end user, they won't even
know the server side includes were ever used, and if they view source,
they won't see any trace of them.
