Oh!, sorry! I forgot to tell you, in my previous e-mail, that I meant that but WITH a an arrow tip on the right.
here is a LaTeX doc, you can integrate it into a LyX doc.
Herbert
\documentclass[a4paper,12pt]{article}
\usepackage{pst-node}
\def\bArrow#1#2{%
\rnode{A}{#1} \rnode{B}{#2}%
\ncbar[angle=-90,nodesep=1pt]{->}{A}{B}%
}
\begin{document}\bArrow{One}{Two}
\end{document}
