68. The memory medium of claim 57, wherein said determining differences between said first and second graphical programs comprises finding functional differences between said first graphical program and said second graphical program, wherein a functional difference indicates a potential difference in execution of said first and second graphical programs.
69. The memory medium of claim 68, wherein said determining differences between said first and second graphical programs includes finding cosmetic differences between said first and second graphical programs, wherein a cosmetic difference is a non-functional difference.