We can edit, comment (plain text), and track changes in Word docs and other file types in the CMP...but we can't tag other users. This seems like an odd deficiency and it would really help us to be able to call out other users who specifically need to address certain sections of each file. Otherwise, it's very difficult to utilize the functionality of having these files in the first place. The idea is collaboration, and not being able to use tagging to essentially "assign" feedback to the correct user limits the use of this feature.