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Ralph TeX provides calligraphic alphabets, which can be accessed using <cmd>cal</cmd> however, there are no script alphabets in Computer Modern or Latin Modern. Raph Smith's Formal Font [http://www.ctan.org/tex-archive/fonts/rsfs/] provides a bit more cursive caligarphic symbolsscript alphabets that blend well with Computer Modern and Latin Modern. They can be used inside ConTeX by ConTeXt as follows
Another method to use the font is
<texcode>
\font\tenscr=rsfs10 at 12pt %bodyfontsize
\font\sevenscr=rsfs7 at 9pt %scriptfontsize
\font\fivescr=rsfs5 at 7pt %scriptscriptfontsize
\skewchar\tenscr='177 \skewchar\sevenscr='177 \skewchar\fivescr='177
\newfam\scrfam \textfont\scrfam=\tenscr \scriptfont\scrfam=\sevenscr
\scriptscriptfont\scrfam=\fivescr
\def\scr{\fam\scrfam}
moved rsfs to Rsfs: move to Uppercase
== Using Ralph Smith Formal Font ==
<context source="yes">
\starttypescript [math] [modern,computer-modern,latin-modern,ams] [size]
\definebodyfont [17.3pt,14.4pt,12pt,11pt,10pt,9pt][mm][mc=rsfs10 sa 1]
\definebodyfont [8pt,7pt] [mm] [mc=rsfs7 sa 1]
\definebodyfont [6pt,5pt,4pt] [mm] [mc=rsfs5 sa 1]
\stoptypescript
\definefamilysynonym [default] [scriptfamily] [mc]
\def\scr{\fam\purefamily{scriptfamily}} % To use ${\scr ABC}$
\def\script#1{{\scr#1}} % To use $\script{ABC}$
\definetypeface [modern] [mm] [math] [modern] [ams] [encoding=texnansi]
\setupbodyfont[reset,modern,11pt]
\starttext
${\scr ABCDEFGHIJKLMNOPQRSTUVWXYZ}$
$\sum_{\scr ABCDEFGHIJKLMNOPQRSTUVWXYZ}$
\stoptext
</context>
== Improper ways to use the font ==
These methods are listed for people who want a stop gap solution for other fonts. These should not be used for RSFS.
* The first method is to use rsfs10 for all font sizes
<context source="yes">
\def\mathrsfs#1{\text{\definedfont[RalfSmithFormalScript]#1\/}}
\mathrsfs{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
</context>
'''Note:''' Since this is an italic script, one needs italic correction <code>\/</code> in the definition.
* The ''plain tex'Note' way of using the font is:<texcode> \font\tenscr = rsfs10 at 12pt %bodyfontsize \font\sevenscr = rsfs7 at 9pt %scriptfontsize \font\fivescr = rsfs5 at 7pt %scriptscriptfontsize \skewchar\tenscr = '177 \skewchar\sevenscr = '177 \skewchar\fivescr = ' Since this is an italic script, one needs italic correction <code>177 \newfam\scrfam \textfont\scrfam = \tenscr \scriptfont\scrfam = \sevenscr \scriptscriptfont\scrfam = \/</code> in the definition.fivescr
\def\scr{\fam\scrfam}
</texcode>
With these defintions one can use <cmd>scr</cmd> just like <cmd>cal</cmd>. This method has the advantage that it uses different fonts (rsfs10, rsfs7, rsfs5) in body script and scriptscipt.
