@ArMo: Thanks a lot for the tip. Looks like a good workaround, however I couldn’t make it work in case source and target files are located in different listings (say: source.txt (already tagged) in folder A and target.txt (untagged) in folder B).

@Maurizio: Didn’t want to make you change your priorities. I guess I was just curious about the roadmap 🙂 Tabbles is a great program!