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== Description ==
Displays a fraction. In first bracket pair the numerator is set, in the second the denominator.It is the same as <texcode>\frac</texcode>
== Example ==
<texcode>
<context>
$\fraction{x^2}{k+1}$
</context>
You can define also a wide version of the fraction bar, in case the numerator or denominator contain a fraction:
<texcode>
\definemathfraction
[widefrac]
[margin=.25em]
</texcode>
and then use it as in
<texcode>
\widefrac{a}{\fraction{b}{c}}
</texcode>
which gives
<context>
\widefrac{a}{\fraction{b}{c}}
</context>
