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From: "John R. Culleton" <john@wexfordpress.com>
Newsgroups: gmane.comp.tex.context
Subject: The \frac macro.
Date: Sun, 22 Apr 2007 13:01:57 -0400
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Knuth defines a macro for simple fractions such as 3/4 etc. and calls 
it \frac:
\def\frac#1/#2{\leavevmode
\kern.1em \raise .5ex \hbox{\the\scriptfont0 #1}%
\kern-.1em $/$%
\kern -.15em \lower .25ex \hbox{\the\scriptfont0 #2}}%

The call is e.g., \frac 3/4.


This works fine in Context. However if I undefine the Knuth macro and 
still use the same \frac call I don't get an error message but the 
results are quite different.  I get both a stroke and a bar between 
the 3 and the 4. 

Is there another macro in Context called \frac and if so how is it 
called?
-- 
John Culleton
Able Indexing and Typesetting
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