So, I'm trying to make the use of center_x, center_y easier in Chingu ( http://github.com/ippa/chingu/tree/master ) ... and can't decide on naming:

http://pastie.org/608066    .. anyone got a opinion?

Not sure if my bouncer ate what I said, but I'd still propose the CSS conventions (50% x = center, 50% y = middle) because I'm used to them ;)

I'm a webguy and even I didn't know that :). Since they mean basicly the same thing (center vs middle) I made both work.