[OS X TeX] decorated underbrace?

[Morten Høgholm]

On Thu, 19 Jan 2006 04:21:53 +0100, Alain Schremmer  
<Schremmer.Alain at gmail.com> wrote:

> Is there a way to define \xunderbrace[under] and \xoverbrace{over} to  
> work like \xleftarrow[under]{over}?

\overbrace and \underbrace create an operator in the eyes of TeX (just  
like \sum), which means that they allow subscripts and superscripts:

\documentclass{article}
\begin{document}
\[
   \underbrace{ARG}_{xyz}^{abc}
\]
\end{document}


-- 
Morten
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