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(Predefined Units): Fix the symbol for a TeX points, mention other

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TeX-related units.
This commit is contained in:
Jay Belanger 2005-10-28 04:49:41 +00:00
parent ca7250cb5a
commit 5dee9246a3
1 changed files with 11 additions and 3 deletions
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14
man/calc.texi
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@ -27991,9 +27991,17 @@ for Angstroms.
@end ifinfo
The unit @code{pt} stands for pints; the name @code{point} stands for
a typographical point, defined by @samp{72 point = 1 in}. There is
also @code{tpt}, which stands for a printer's point as defined by the
@TeX{} typesetting system: @samp{72.27 tpt = 1 in}.
a typographical point, defined by @samp{72 point = 1 in}. This is
slightly different than the point defined by the American Typefounder's
Association in 1886, but the point used by Calc has become standard
largely due to its use by the PostScript page description language.
There is also @code{texpt}, which stands for a printer's point as
defined by the @TeX{} typesetting system: @samp{72.27 texpt = 1 in}.
Other units used by @TeX{} are available; they are @code{texpc} (a pica),
@code{texbp} (a ``big point'', equal to a standard point which is larger
than the point used by @TeX{}), @code{texdd} (a Didot point),
@code{texcc} (a Cicero) and @code{texsp} (a scaled @TeX{} point,
all dimensions representable in @TeX{} are multiples of this value).
The unit @code{e} stands for the elementary (electron) unit of charge;
because algebra command could mistake this for the special constant