\setuppapersize [A5][A3] \setuparranging [2UP,rotated,doublesided] \setuppagenumbering [alternative=doublesided] \setuplayout [margin=0pt,width=fit] \setupbackgrounds [text][text][background=screen] \setupcolors [state=start] \setuplayout [location=middle,marking=color] \setuptolerance [tolerant] \setupbodyfont [lbr,8pt] \starttext \dorecurse{30}{\input tufte \par \input knuth \par} \stoptext