Jim Elwell wrote on 2002-07-15 16:35 UTC:
> My understanding is that special symbols do not always show up properly

Please don't call then "special symbols", just because you happen to
have a keyboard that doesn't have a key for � or �. These are perfectly
normal character set elements, and the standard keyboards of many
countries have them as regular keys.

> However, by way of checking this, does 41.7 �C show up properly?

No. You picked the wrong symbol. You used the superscript o, which is
the male Spanish ordinale indicator, as in premiero = 1�

> How about 41.7 �C?

Yes, this is the correct degree symbol.

Unfortunately, Microsoft ships some fonts, where � (male ordinal
indicator) and � (degree) are very difficult to distinguish. On the much
more helpful X Windows System 6x13 font, which I use to type this, the
male ordinal indicator is an underlined superscript o, therefore �C
immediately looks very wrong, whereas �C looks perfectly correct.

People entering text without having been properly trained to do this
correctly leads to rapidly degrading practice in typography. I almost
got used to hardly anyone being able to correctly distinguish between
the HYPHEN and MINUS characters in Word for instance (HYPHEN is the
short dash between words, MINUS is much longer, just like the horizontal
bar in the + sign, similar to the EN DASH used to indicate a range of
numbers).

It makes sense to be familiar with the different easily confuseable
characters in the ISO 10646 and Unicode character sets, such as

  U00B0 = DEGREE SIGN
  U00BA = MASCULINE ORDINAL INDICATOR

or

  U002D = HYPHEN-MINUS
  U2010 = HYPHEN
  U2013 = EN DASH
  U2014 = EM DASH
  U2212 = MINUS SIGN

Literature:

  http://www.cl.cam.ac.uk/~mgk25/unicode.html
  http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html

Markus

-- 
Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
Email: mkuhn at acm.org,  WWW: <http://www.cl.cam.ac.uk/~mgk25/>

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