Saw this over at HaD. Thought some might find it useful.
cool, thanks a lot…this might come in handy in larger designs that take weeks of work (and maybe several people working on it)
I don’t think it would work very well when there were large changes to a design. At least the XOR highlighting part works best when the changes are relatively tiny.
The idea of using a gerber viewer to load up multiple versions of the file for quick “flipping” from one version to another might still be useful, along with the part of the script that creates the gerbers from all the backup files (though this is not a very quick process in eagle…)