[texhax] Problem with tabular environment

[E. Krishnan]

On Mon, 12 Mar 2007, Michael Barr wrote:

> The following file,
>
> \documentclass{article}
> \begin{document}
>
> \begin{tabular}{|b{1cm}|b{1cm}|b{1cm}|}\hline
>  1 1 1 1 1 1 1 1 1 1 1 1&2 2 2 2 2 2 2 2&3 3 3 3\\ \hline
> \end{tabular}
> \end{document}
>
> copied from the bottom of p. 106 in the first
> edition of The LaTex Companion, results in the error message:
>
> ! LaTeX Error: Illegal character in array arg.
>
> Any idea what is going on?


\usepackage{array}

-- 
Krishnan