Fluxion is one good feature that helps you trace the function calls. Video help oh how easy it is will be released on 22-Feb-2007
Release 3.0 is a major release with some good features. some of the highlights of release 3.0 are as follows:
1. Ez Trace - Flow trace of function.
2. Map Viewer - View Jackal status.
3. AutoXcript - Automate web page actions with jackal. Record and play. XML structured automation.
And many more ...