Hello, I'use extensively context to write my lecture notes and for all of my printing needs. For my students, I've made some lecture presentations in color, and I print them in black&white, with four pages on one page for the handout. I would like to compute a correct Table of contents according to the handout : so to divide the current page number by four to get a correct page number for the handout. \def\ChapterPrefix#1{\the\numexpr#1/4 \relax} \setupcombinedlist[content][level=1] \setuplist[chapter][after=,before=,numbercolor=yellow,numbercommand=\underbar,pagecommand=\ChapterPrefix] That doesn't work, and I've some difficulties to figure how computation is performed in e-TeX... Could you help me to resolve this issue ? Kind regards, Pierre-François Bonnefoi. -- Bonnefoi Pierre-Francois | E-mail : bonnefoi@unilim.fr Universite de Limoges, Laboratoire XLIM | Tel : 06 28 18 03 38 83, rue d'Isle | Mrs. Peel, we're needed... 87000 Limoges - FRANCE | The Avengers.