I love how, in Microsoft Word, I can go to Tools > Track Changes > Compare Documents, and see a side-by-side annotation of the differences in documents.
Is there a way to automate this from the command line, so that, for example, if a user uploads a document to my server, I can compare the two and return a copy of the annotated diff. (This is for MS Office training purposes.)
I am also looking for similar solutions for Excel and Powerpoint.
I welcome any solution or idea involving scripting/XML diff/etc.