> 0xA000 started out as an experiment in trying to create a pixel font with greyscale squares for anti-aliasing. What does that mean? Aren't all fonts using gr

> 0xA000 started out as an experiment in trying to create a pixel font with greyscale squares for anti-aliasing. What does that mean? Aren't all fonts using grey pixels for AA while pixels are, well, squares (or close enough)? I know about "sub-pixel AA" done using colors but I don't think they're referring to this. Or do they mean that the font has no AA at all and is just one using regular pixels, all of the same colors? (FWIW I'm using a version of the Terminus font that does just that: "pixel perfect" rendering at several sizes, no AA)