\documentclass[pdftex,12pt,helvetfont]{elpres}
\usepackage[latin1]{inputenc}
\usepackage{color}
\usepackage{graphicx}

\definecolor{rot}{rgb}{0.75,0.05,0.25}
\definecolor{hellgrau}{gray}{0.5}
\definecolor{blau}{rgb}{0,0,0.7}

\newcommand{\hoch}[1]{\raisebox{0.6ex}{#1}}
\newcommand{\tief}[1]{\raisebox{-0.6ex}{#1}}


\usepackage[document]{ragged2e}
\RaggedRight

\begin{document}
\begin{titlepage}
\distance{1}
\centering \LARGE
 \bfseries \textcolor{blau}{Title of a presentation written with the
    \texttt{elpres} class}

\distance{1}
\large
Autor\\[1ex]\textcolor{hellgrau}{Institution}
\distance{2}
\end{titlepage}

\begin{psli}[Title of a page using the \texttt{psli} environment]
\textcolor{rot}{The first page}

\begin{citemize}
  \item One
  \item Two
\end{citemize}

\begin{cenumerate}
  \item the first enumerated item
  \item the second enumerated item
\end{cenumerate}

\begin{cdescription}
  \item [One] described item
  \item [Another] described item
\end{cdescription}

\end{psli}

\begin{rsli}
The second page written with the \texttt{rsli}-environment
\end{rsli}

\end{document}