Dear list, I have the following imposition sample: \startbuffer[newbuff] \showframe\showgrid \setuppapersize[A3, landscape] \setuplayout[width=middle] \starttext \dorecurse{4}{\null\page} \stoptext \stopbuffer \startmode[*first] \savebuffer[newbuff][A3page.tex, prefix=no] \executesystemcommand{context --purgeall A3page.tex} \stopmode \showframe \setuplayout[page] \setuppapersize[A5][A4, landscape] \setuparranging [2UP] \setupinteractionscreen[option={landscape, paper}] \starttext \doiffile{A3page.pdf} {\def\Doc{A3page.pdf} \getfiguredimensions[\Doc] \dorecurse{\noffigurepages} {\ifodd\recurselevel \rotate[rotation=90] {\externalfigure[\Doc][page=\recurselevel, width=\textheight]} \else\rotate[rotation=270] {\externalfigure[\Doc][page=\recurselevel, width=\textheight]} \fi}} \stoptext I’m afraid that if rotation values are 270 or 180, the imposed page has an extra vertical space before. I think this might be a bug. Or I don’t know what I might be missing. Many thanks for your help, Pablo -- http://www.ousia.tk