\voffset=-1in \topmargin=20mm \headheight=0mm \headsep=0mm
\textheight=\paperheight \advance\textheight by -2\topmargin
-\newdimen\titlewidth \titlewidth=70mm
+\newdimen\titlewidth \titlewidth=0.5\textwidth \advance\titlewidth by -40pt
\pagestyle{empty}
\errorcontextlines=50