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From: Hans Hagen <pragma@wxs.nl>
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Subject: Re: [ConTeXt] Math fonts: cal etc.
Date: Mon, 05 Jul 1999 16:27:12 +0200
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Tobias Burnus wrote:

> I can use \cal{HI THERE} \frak{And also there} \goth{I am a fraktur font again}

No you can't, because it's a font switch and needs grouping! They are
defined as:

\definefont [frak] [Fraktur     sa \currentfontscale]
\definefont [goth] [Gothic      sa \currentfontscale]
\definefont [cal]  [Caligraphic sa \currentfontscale]

So by adapting file mappings you can have different ones. 

> but using $\cal F$, $\frak F$ doesn't work.

\def\fraktur    #1{\ifmmode\hbox\fi{\frak#1}}
\def\gothic     #1{\ifmmode\hbox\fi{\goth#1}}
\def\caligraphic#1{\ifmmode\hbox\fi{\cal #1}}

will do what you want. I can add those if needed/wanted/agreed upon. 

> (I would also like to use the "Ralf Smith Formal Script" font, which is also a
> math font.
> I think adding it (e.g. to font-rsf.tex shouldn't be difficult, but I'd like to
> have some pointer.)

\definefontsynonym [MathRoman]          [RalfSmith...]
\definefontsynonym [MathExtension]      [...]
\definefontsynonym [MathItalic]         [...]
\definefontsynonym [MathSymbol]         [...]

\definebodyfont
  [14.4pt,12pt,11pt,10pt,9pt,8pt,7pt,6pt,5pt,4pt]
  [mm]
  [default]

Or something like that, 

Hans

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