It is used to make a notation that the poster is " all caught up "
reading, commenting on LO's (layouts).
You may also see a lot of JCI, which is " just checking in" and some use MMS= marking my spot, so the poster knows where they left off reading or commenting! HTH ( hope that helps)
Hey Noelle's Mom--Someone sent me this list when I was a newbie--I found it quite handy as I didn't know what everyone was saying to each other or even making sense out of the comments on my Los. Hope it helps!