Where I work we also use "C" as completely effaced. So on the board, it can look like: C/C/+1 for example, meaning Completely dilated and completely effaced, and +1 station. Sometimes we'll even say, "She's complete, complete, +1" We have a doc who's originally from NYC (I'm in CA) who also says "She's fully"....all meaning the same thing. I think sometimes it's a part of the country thing.