Transactional lawyers are lawyers that primarily work on transactions, eg, mergers and acquisition, bond or share issuances, etc. It means they spend most of their time drafting, reviewing and negotiating deal documents rather than, eg, going to court.

I'm not the person you responded to but there are various diff programmes out there that lawyers use. I think they tend to be proprietary formats though. Lawyers pretty much all work in MS Word so any comparison software needs to work with that.

Thank you Noboru! So there are proprietary diff formats for text formats?