Hi Bogdan, I Understand, and also see the reasons given by Phil on this subject. I've discovered the Lightroom Hierarchical keyword field just today and how LR adds it to any xmp-dc:subject it finds. This is a pain so I am making sure I delete it in my processes. I agree that keywording should really be single keywords but we all have our preferences, unfortunately when it comes down to delimiters, as is usual with databases it would be a solution to be able to change the defaults to allow commas if you need them. Keywording is a laborious process and anything that can make it easier to change, especially when you're cleaning up or have made some mistakes, is worth looking into. However, this is really why I want to use the best app for keywording and that for me is LR because it handles multiple selections gracefully marking all non-common keywords with a *. The keywording problem as in the GUI is probably not worth the amount of work it would take. I agree. regards Louis