\startenvironment paper

% Proefschrift formaat is 17x24cm
% We doen aan beide zijden 5mm afloop, zodat we plaatjes vol kunnen printen
\definepapersize[proefschrift+rand][width=180mm, height=250mm]
\definepapersize[proefschrift][width=170mm, height=240mm]

\setuppapersize[proefschrift][proefschrift+rand]
\setuplayout[location={middle,middle}]
\setuplayout
  [width=130mm,
   height=195mm,
   backspace=20mm,
   topspace=25mm,
   header=0mm, % nodig?
   footer=0mm]

% Snijranden
\setuplayout[marking=on]

% Assymetrisch
\setuppagenumbering[alternative=doublesided]

\startmode[draft]
\setuppapersize[A5]
\setuplayout
  [width=130mm,
   height=195mm,
   backspace=12mm,
   topspace=8mm,
   header=0mm, % nodig?
   footer=0mm]
\stopmode

\stopenvironment
