digit groups

[Jón Fairbairn]

Just to fill in a detail:

I <jon.fairbairn at cl.cam.ac.uk> wrote:
> I have some dim recollection that there is an ISO [...]
> standard that says that rather than commas or points, we
> should use narrow spaces between groups of digits in
> numbers.  I can't find it now, though -- can anyone?

After a bit more searching, I think it's ISO 31-0 part 3,
but I'm not going to fork out CHF 102 to check! It is,
however also specified for SI:
http://www1.bipm.org/en/si/si_brochure/chapter5/5-3-2.html#5-3-4

-- 
Jón Fairbairn                                 Jon.Fairbairn at cl.cam.ac.uk