>     What are "characters" in a proportional-space environment?
> In general terms, Jon's inference -- that "ch" is an inappropriate
> length measure -- is quite correct.  And not only for the reason
> he states:
I am assuming that when authors choose to use ch that they are aware
of the perils involved - it makes perfect sense when the table is
in a single fixed pitch font.
The use of ems is problematic in this case as an em isn't the same
as the width of a character for a fixed pitch font. My understanding
is that the em is equal to the point size which is related to the
height of the font - not its width.
-- Dave Raggett <dsr@w3.org> url = http://www.hpl.hp.co.uk/people/dsr
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