With the software we came from if we wanted to have the different replacement values for the same smiley image we ended up having to have duplicate entries that pointed to the same physical file. The way XF handles it easily knocked out a couple of dozen entries that were no longer needed.
I know, I know... some of you guys/gals may be thinking "So what? It's a little thing." but for me it served as a nice reminder that XF is a collection of 'little things' that help me enjoy the software & look forward to see other 'little things' the guys have in mind for the future.