The Executer is a bit more advanced than its partner script (The Includer), it will grab the results of ANY web file (CGI, java, html, etc.) on ANY web site, by opening a connection (using the LWP module), and printing it anywhere you want using a simple Javascript tag. It not only does what SSI can (for servers that don't have it), but it can grab contents from any web site too! That's something you can't do with SSI.