[metapost] uright greek "mu" symbol in Metapost

[Jens-Uwe Morawski]

Am Freitag, den 28.04.2006, 22:09 +0200 schrieb Manuel Alexandre
Pouchon:

> I know that in LaTeX it is a problem  to print upright "mu", because the 
> mathematical environment $..$ will only provide the italic greek 
> symbols. However, for LaTeX there are packages to handle this problem.
> How can I manage this problem in the MetaPost labels? In the btex ... 
> etex environment only TeX is allowed (?). And in any case, how could I 
> introduce any packages in the btex ... etex environment.

verbatimtex
%&latex
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{textcomp}
\begin{document}
etex

beginfig(1);
label(btex \textmu  $\mu$ etex ,origin);
endfig;
end