In order to use SSI (Server Side Includes) in you web pages, you must first make sure that it has been enabled for your website. E Street, by default, does not automatically enable SSIs. You can request we turn it on for you by sending a message to ‘support@estreet.com’. This service is not available on all servers.
To help understand what SSI’s can do, we have an online tutorial that you can read at:
https://clients5.estreet.com/ssi/ssi.shtml