At www.bignosebird.com/sdocs/echo.shtml you can read what this is about.

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Monday, 06-Feb-2012 04:10:14 GMT
Monday, 06-Feb-2012 05:10:14 CET
ssi_echo.shtml
/how2nerd/ssi_echo.shtml
Sunday, 07-Jan-2007 22:06:10 CET
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38.107.179.236
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GET
www.steltenpower.com
80
HTTP/1.1
Apache/2
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AUTH_TYPE client authorization method if any
CONTENT_LENGTH size of input posted from client
CONTENT_TYPE MIME type of content
DATE_GMT The current GMT (greenwich, UK) can be formatted using #config
DATE_LOCAL current time/date, can be formatted using #config
DOCUMENT_NAME document name that was requested
DOCUMENT_URI URL of the document
LAST_MODIFIED document modified date, can be formatted using #config
PAGE_COUNT number of accesses to current document since server was brought on line
HTTP_REFERER URL of the document the client came from
REMOTE_ADDR Numeric IP address of the client
REMOTE_HOST domain name of the client (DNS option must be active on server)
REMOTE_USER ID of user, rarely ever found
REQUEST_METHOD HTTP method: GET OR POST
SERVER_NAME server hostname (i.e., www.bignosebird.com)
SERVER_PORT the port used by httpd (usually 80)
SERVER_PROTOCOL Which version of Httpd compliance
SERVER_SOFTWARE The name of the server software, i.e., apache 1.2.5
TOTAL_HITS total pages served by server since brought on line


source of the upper table (.shtml)

<table><tr><td>
<!--#echo var="AUTH_TYPE"--><br>
<!--#echo var="CONTENT_LENGTH"--><br>
<!--#echo var="CONTENT_TYPE"--><br>
<!--#echo var="DATE_GMT"--><br>
<!--#echo var="DATE_LOCAL"--><br>
<!--#echo var="DOCUMENT_NAME"--><br>
<!--#echo var="DOCUMENT_URI"--><br>
<!--#echo var="LAST_MODIFIED"--><br>
<!--#echo var="PAGE_COUNT"--><br>
<!--#echo var="HTTP_REFERER"--><br>
<!--#echo var="REMOTE_ADDR"--><br>
<!--#echo var="REMOTE_HOST"--><br>
<!--#echo var="REMOTE_USER"--><br>
<!--#echo var="REQUEST_METHOD"--><br>
<!--#echo var="SERVER_NAME"--><br>
<!--#echo var="SERVER_PORT"--><br>
<!--#echo var="SERVER_PROTOCOL"--><br>
<!--#echo var="SERVER_SOFTWARE"--><br>
<!--#echo var="TOTAL_HITS"-->
</td><td>
AUTH_TYPE client authorization method if any <br>
CONTENT_LENGTH size of input posted from client <br>
CONTENT_TYPE MIME type of content <br>
DATE_GMT The current GMT (greenwich, UK) can be formatted using #config <br>
DATE_LOCAL current time/date, can be formatted using #config <br>
DOCUMENT_NAME document name that was requested <br>
DOCUMENT_URI URL of the document <br>
LAST_MODIFIED document modified date, can be formatted using #config <br>
PAGE_COUNT number of accesses to current document since server was brought on line <br>
HTTP_REFERER URL of the document the client came from <br>
REMOTE_ADDR Numeric IP address of the client <br>
REMOTE_HOST domain name of the client (DNS option must be active on server) <br>
REMOTE_USER ID of user, rarely ever found <br>
REQUEST_METHOD HTTP method: GET OR POST <br>
SERVER_NAME server hostname (i.e., www.bignosebird.com) <br>
SERVER_PORT the port used by httpd (usually 80) <br>
SERVER_PROTOCOL Which version of Httpd compliance <br>
SERVER_SOFTWARE The name of the server software, i.e., apache 1.2.5 <br>
TOTAL_HITS total pages served by server since brought on line
</td></tr></table>