Scenario assignment
Due:  Sept. 2

In small groups (3 people), run ISVis on the tutorial or any other program 
you like.  Describe two scenarios that ISVis does or should support.  Try 
and verify the classes and their behavior involved in these scenarios either 
by using a debugger or looking at the code.  Try and include one scenario 
that is atypical, such as failure modes or unexpected behavior.