So although I think `bcx` is redundant (I mean, obviously `bx` is a coordinate, no need to further specify that!), I'm fine if you want to use this convention. However, you should make sure other code follows this convention as well (in particular, server mapgen code), otherwise it's two conventions which interact in confusing ways- when I first read this, I assumed the `c` stood for "chunk", rather than "coordinate", and I was trying to figure out what a "block chunk x" meant (was it just another name you were using for offset coords?).