Hi Fredrik, David, all, Sorry I had to leave at the top of the hour. I don't know what was decided, but removing dir from source/target may be quite helpful at the implementation level as it become a lot easier to get inherit directly from the unit. So I wouldn't see any problem going in that direction. That doesn't answer the basic issue of directionality at the inline-level (values for <pc>/<sc>, using control chars or not, etc.) but it eliminates the question from the segmentation modification. BTW: should <ec> have dir too? (when isolated) Cheers, -yves