[css-fonts-3] i18n-ISSUE-296: Usable characters in unicode-range

4.5. Character range: the unicode-range descriptor
http://www.w3.org/TR/2013/WD-css-fonts-3-20130711/#unicode-range-desc


"Valid Unicode codepoint values vary between 0 and 10FFFF inclusive."
Do we need to say something about characters that cannot be used, such 
as surrogate codepoints?

Perhaps what is meant is that the codepoint values cannot be higher than 
10FFFF or lower than 0. In this case, perhaps the spec should say that 
the codepoint space (range) is between 0 and 10FFFF, rather than give 
the impression that all values in that space are acceptable.



(after i18n WG discussion)