The non-breaking space is certainly not 256 in ASCII (ASCII only extends to 127) and not even in Latin 1 (goes up to 255) and also not in Unicode – it's 160. Wh

The non-breaking space is certainly not 256 in ASCII (ASCII only extends to 127) and not even in Latin 1 (goes up to 255) and also not in Unicode – it's 160. While you can use   in HTML you can also use   or  , both of which work in XML as well. And since numeric and hexadecimal character references are much easier to generate (you don't need a lookup table) I'd say they're a far nicer choice these days.