Am 25.01.2015 um 23:15 schrieb John Kitzmiller :

Desired outcome: a multipage booklet on letter size paper with margins lined up when duplex printed and folded.

Using imposition with [letter][letter,landscape] did not work, so to start I used:

\definepapersize[booklet][width=140mm,height=216mm] \setuppapersize[booklet][letter,landscape] \setuparranging[2UP,doublesided] \setuplayout[width=115mm, leftedge=0mm, leftmargin=0mm, backspace=15mm, rightmargin=0mm, rigthedge=0mm] \showframe \starttext \dorecurse{8}{\input Ward \page} \stoptext

but the inside and outside margins do not line up. Where is the elegant path?

1. Set your document doublesided with \setuppagenumbering[alternative=doublesided] 2. Reduce the width of the backspace \setuplayout[backspace=10mm] Wolfgang