Server Side Includes (SSI)

Server Side Includes (SSI) are used to include common page fragments (for example, a page header or footer) in other pages. Used correctly, they can reduce the amount of effort required to maintain your site, if for example, your main navigation is in an include file that is included in all your pages, the next time you change the navigation you will only have to change the navigation include file instead of changing every HTML file.

The University permits Apache SSI, all pages using SSI must have a .shtml extension. There are many SSI tutorials on the web, but the definitive SSI tutorial is from the Apache Group itself.