This file, FileInclude.shtml, uses the WebLogic ServerSideIncludeServlet servlet to include the contents of a .txt file on this page. The <#include> tag has its VIRTUAL attribute set to the name of a file, hello.txt, which is also in this directory.
The line that includes hello.txt is:
<!--#include virtual="hello.txt"-->
hello.txt contains these lines:
<h1> <font color=#1260> Hello world! </font> </h1>
Here is the result of the include: