It denotes the parent class of the resulting servlet. Most of the time it's not needed. The generated servlet will extend HttpServlet. If you have a class that extends httpservlet you can just extend that class then.
Bosun (SCJP, SCWCD)
So much trouble in the world -- Bob Marley
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com