This page tests information about the server and the client application (user agent, browser). These variables are in fact also CGI variables. A bigger list with explanations and examples is available in my native Danish here.
Server Side Includes at http://www.thau-knudsen.dk/ require that the file extension is .shtml. I advise any web master to use it if setting out to apply SSI - just in case.
Erik Thau-Knudsen, 2005-03-06
text/html,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
en-us,en;q=0.5
CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
/usr/local/bin:/usr/bin:/bin
(none)
(none)
38.107.179.224
58191
HTTP/1.1