Setting the option display with the documentclass powersem seems to cause the
positioning of text to switch from vertically centred to top.
The file
\documentclass[display, a4paper, landscape]{powersem}
\begin{document}
\begin{slide}
\section{Introduction}
\end{slide}
\end{document}
produces something like
______________________
| 1 Introduction |
| |
| |
| |
|______________________|
Removing the option display yields
______________________
| |
| |
| 1 Introduction |
| |
|______________________|
I thought the option display was meant to affect only "dynamic" features.
Sven