\documentclass[twoside]{scrartcl}
\usepackage[frame]{xy}
\usepackage{tabularx}
-\usepackage[latin1]{inputenc}
+\usepackage[utf8]{inputenc}
\setlength{\voffset}{0.4cm}
\setlength{\hoffset}{-2.0cm}
\setlength{\topmargin}{0cm}
\setlength{\topskip}{0pt}
\setlength{\oddsidemargin}{1.0cm}
\setlength{\evensidemargin}{1.0cm}
-\setlength{\textwidth}{19.2cm}
+\setlength{\textwidth}{17cm}
\setlength{\textheight}{24.5cm}
\setlength{\footskip}{1cm}
\setlength{\parindent}{0pt}
\vspace{0.5cm}
\begin{tabularx}{\textwidth}{lXrr@{}}
\textbf{Rechnung} & \textbf{Ausgestellt}
- & \textbf{Fällig} & \textbf{Verrechnet} \\
+ & \textbf{Fällig} & \textbf{Verrechnet} \\
<%foreach invnumber%>
<%invnumber%> & <%invdate%> \dotfill
& <%due%> & <%paid%> \\