Moved to XHTML 1.0 transitional, employing the appropriate filename extension
and anchor identifier structure.
Adjusted the pop-up element positioning.
1l=[(0,10),(10,20)] 2y=23 3fora,binl: 4foriina,b: 5x=i 6else:# NOTE: Need to support StopIteration! 7x=y 8else: 9a=b