Redwood Internet Guide

SSI/XSSI

SSI lets you embed a number of special 'commands' into the HTML itself. When the server reads an SSI document, it looks for these commands and performs the necessary action. For example, there is an SSI command which inserts the document's last modification time. When the server reads a file with this command in, it replaces the command with the appropriate time.

How to use SSI/XSSI with your account

To use SSI and/or XSSI, your html files must end in the extension .shtml The .shtml extension enables the web server to process SSI commands embedded in the web page.

For more info about SSI, visit SSI NCSA Tutorial.
XSSI documentation explains extended Server Side Includes.