> Especially that they restrict themselves to Latin letters and Arabic numbers. I think this is sensible actually. Certainly better than the inverse, Latin nu

> Especially that they restrict themselves to Latin letters and Arabic numbers. I think this is sensible actually. Certainly better than the inverse, Latin numbers and Arabic letters. I'm not sure why they put it in this way (with the ethnic reference), but they are really just saying about putting it letters and numbers that people use and would be able to spell out to each other. I think your idea of a prefix though is great - simple.