As extensions, it has the parameters "reqstate" (for echoing Jigsaw request states) and "reqheader" (for echoing request header).Also, it can
take the flag "here", whose presence means that the variable is to be interpreted at the deepest request level (in the case of chained
internal requests), instead of doing so at the top (external request) level. It inserts the value of a variable in the document.
Parameters:
- var = a SSI variable
- reqstate = a Jigsaw request state
- reqheader = a request header
- here = a flag
Examples:
<!--#echo var="DOCUMENT_URI" -->
Display the document uri.
<!--#echo reqheader="referer" -->
Display the referer header of the request.
<!--#echo reqstate="pathinfo" -->
Display the request state "pahtinfo".