Somewhat related, bitmap files (.bmp) store the image lines in bottom-to-top order, effectively putting (0,0) at the bottom-left. It's the only image format I'

Somewhat related, bitmap files (.bmp) store the image lines in bottom-to-top order, effectively putting (0,0) at the bottom-left. It's the only image format I've ever seen that does that -- everyone else stores lines in top-to-bottom order, consistent with putting (0,0) at the top-left.