No this is something prevented.
If you want to see the differences between two input files, send both out to a neutral file (.cii), then use a text comparison tool. This is much faster than manually reviewing dialog screens.
If you mean a Diff generator, I can suggest WinDiff and TortoiseMerge. I think there's a similar tool included with UltraEdit. Either way, they are extremely useful when dealing with text files as long as they have line breaks. If everything is on a single line (e.g. some XML files) they can't be compared easily.