I would like to change the number of columns of a page just like the following:
2 columns --> no columns --> 3 columns.
But multicol inserts a page-break whenever I use its environment.
Minimal working example:
\documentclass{scrartcl}
\usepackage{multicol}
\begin{document}
\begin{multicols*}{2}
abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc
\end{multicols*}
abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc
\begin{multicols*}{3}
abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc
\end{multicols*}
\end{document}

multicolenvironment, there is nothing to break or balance. – gernot Feb 07 '24 at 16:51