3

I got the LaTeX Error: Environment leftcolumn* undefined with the next MWE:

\documentclass{article}
\usepackage{paracol}

\begin{document}

\begin{leftcolumn*}
\subsection{%
Environments \texttt{leftcolumn} and\\
\texttt{rightcolumn}}
The environments |leftcolumn| and
|rightcolumn| (and their starred versions
with an optional argument) are available as
more convenient means than saying
|\begin{nthcolumn}{0}| to switch to the
left(most) column and ...
\begin{figure*}...\end{figure*}
\begin{figure}[t]...\end{figure}
\end{leftcolumn*}
\begin{rightcolumn}
source and a figure env
\end{rightcolumn}

\end{document}

It's very strange, so I don't know maybe if you compile it, it's will be okay. I'll show the evidence screenshot.

Paracol strange error

4

The documentation for the package does not make this very clear, but it seems that you need to enclose all of the environments it describes inside a paracol one:

\documentclass{article}
\usepackage{paracol}

\begin{document}
\begin{paracol}{2}
\begin{leftcolumn*}
\subsection{%
Environments \texttt{leftcolumn} and\\
\texttt{rightcolumn}}
The environments |leftcolumn| and
|rightcolumn| (and their starred versions
with an optional argument) are available as
more convenient means than saying
\verb|\begin{nthcolumn}{0}| to switch to the
left(most) column and ...
\begin{figure*}...\end{figure*}
\begin{figure}[t]...\end{figure}
\end{leftcolumn*}
\begin{rightcolumn}
source and a figure env
\end{rightcolumn}
\end{paracol}
\end{document}

(I've also fixed the verbatim code, which otherwise leads to an error.)

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.