% afmetingen A4: 21.02241038 cm x 29.73017788 cm
% center usable area on paper
\hsize170.5mm \vsize260mm
\hoffset0pt \voffset0pt
\advance\hoffset by 19.5mm \advance\voffset by 1.5cm
\advance\hoffset by 1.7cm
\advance\hsize by -1.7cm
\advance\hoffset by -1in \advance\voffset by -1in
