63. The memory medium of claim 57, wherein said first and second graphical programs each include a user interface panel which displays data.
57. A computer-readable memory medium comprising program instructions for detecting differences between first and second graphical programs, wherein the program instructions execute on a computer including a display, wherein the program instructions are executable to implement: determining differences between said first graphical program and said second graphical program, wherein said first graphical program and said second gaphical program each comprise graphical code; and displaying an indication of said differences on the display; wherein said differences are used to evaluate at least one of the first graphical program and the second graphical program.