Re: xypic **[r] e **[l]

Lo stesso di prima, mettendo un solo asterisco:
`\documentclass[a4paper]{article}
\usepackage[utf8]{inputenc}
%\usepackage[italian]{babel}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage[all]{xypic}
\begin{document}
\[
\xymatrix{*[l]\text{testo molto lungo} & B \\ C & *[r]\text{molto testo lungo}}
\]
\end{document}`
Errore che ricevo:
`! A was supposed to be here.

\unhbox
l.11 …} & B \\ C & *[r]\text{molto testo lungo}}
I was expecting to see \hbox or \vbox or \copy or \box or
something like that. So you might find something missing in
your output. But keep trying; you can fix this later.`