Added structure information to subprograms, permitting simple paths to methods
to be shown in the viewer.
Added invocation details to viewed while statements.
1l=[(0,10),(10,20)] 2y=23 3fora,binl: 4foriina,b: 5x=i 6else:# NOTE: Need to support StopIteration! 7x=y 8else: 9a=b