Re: [CSS21] 4.3.2 Lengths (reference pixel?)

2010/12/10 Dr. Olaf Hoffmann <>:
> The whole point about this is, that the relation between px and meter
> is already defined before with the cited sequence. If something is
> (127/480)mm, it is precisely defined and there is no need anymore
> to choose something, it is fixed, because mm is always a precisely
> known and reproducible size - whether it is a useful unit for some
> devices or in some situations with limited information on how to
> present a mm for the user agent are a completely other questions.
> This should not be mixed up.

I suggest rereading the previous discussions on the matter.  This
subject has been gone over ad nauseum.  In short, no, you don't always
know what a mm is to any great precision.  That depends on the output

I will not respond further in this vein, though - I can't say anything
without repeating what has already been said in the relevant
discussions.  Please read the list archives on the subject before
attempting to revive any discussion surrounding this issue.


Received on Friday, 10 December 2010 14:08:56 UTC