You could throw them out into a file and then use an external diff tool.


I don't know of one in Caché,  but HL7Spy is pretty good.  Not free though

Doesn't answer your question, but I use Winmerge with some tweaks to the settings to make the highlighting a little nicer:

If I need to compare 1000s of messages from two sets of transforms, I then point their outbound to a single fileout (or since I upgraded to 2019.1, using the export) and then compare the two files.