23. The method of claim 15, wherein, for each respective object in said first graphical program, said matching comprises: comparing the respective object in said first graphical program with one or more objects in said second graphical program; determining a score value for a plurality of object pairs in response to said comparing, wherein each of said plurality of object pairs comprises two object elements, said two object elements comprising said respective object in said first graphical program and an object of said one or more objects in said second graphical program, wherein said score value indicates a degree of matching between said object elements comprising said object pair.
23. The method of claim 15, wherein, for each respective object in said first graphical program, said matching comprises: comparing the respective object in said first graphical program with one or more objects in said second graphical program; determining a score value for a plurality of object pairs in response to said comparing, wherein each of said plurality of object pairs comprises two object elements, said two object elements comprising said respective object in said first graphical program and an object of said one or more objects in said second graphical program, wherein said score value indicates a degree of matching between said object elements comprising said object pair. 25. The method of claim 23, wherein said determining said score value for one of said plurality of object pairs includes examining attributes of object elements comprising said object pair.