Thanks for your tips Wolfgang! I switched to a solution as on the wiki, using overlays and frames in place of layers. After setting the boudingboxes right it works! I have to increase the \objectoffset though, because otherwise the graphic is chopped of:
\setuppapersize[A5][A5] \setuppagenumbering[alternative=doublesided] \def\objectoffset{\cutspace} \startMPinclusions numeric CutSpace, wavePeriods, waveWidth; path unitwave; CutSpace := \the\cutspace; wavePeriods := 3 + 1/4; waveSize := wavePeriods * 2*pi; unitwave := (origin for x=0 step 0.1 until waveSize: .. (x,x*sin(x)) endfor) scaled (1/waveSize); \stopMPinclusions \startuniqueMPgraphic{rightwave} pickup pencircle scaled 1pt; draw origin -- (OverlayWidth,0) -- unitwave xscaled CutSpace yscaled (LineHeight/2) shifted (OverlayWidth,0); setbounds currentpicture to boundingbox OverlayBox; \stopuniqueMPgraphic \startuniqueMPgraphic{leftwave} pickup pencircle scaled 1pt; draw reverse unitwave xscaled (-1*CutSpace) yscaled (LineHeight/2) -- (OverlayWidth,0); setbounds currentpicture to boundingbox OverlayBox; \stopuniqueMPgraphic \defineoverlay[rightwave] [\uniqueMPgraphic{rightwave}] \defineoverlay[leftwave] [\uniqueMPgraphic{leftwave}] \setuphead[chapter] [style=\ss\bfc, page=yes, after={\PlaceDecoration\blank[big]}] \define\PlaceDecoration {\framed [width=broad, frame=off, offset=0pt, background=\doifoddpageelse{rightwave}{leftwave}] {\ss\bfx \date \hfill Author Name}} \starttext \chapter{A very long chapter title on two or more lines} \input knuth \chapter{A very long chapter title on two or more lines} \input knuth \stoptext The \startchapter[] solution on the wiki is very neat, but it doesn't work with MKII. Get errors with MKIV to... (Using TeXLive 2010) But I'll use \setvariables. Thanks for all your help! Tim 2011/4/4 Wolfgang Schuster <schuster.wolfg...@googlemail.com>: > Your problem is that you use {\ss\bfc …} etc. to place the title > rather than contexts \title command where you can define your own > command. With such a command you can put all text in a frame with > your graphic a background. > > - http://wiki.contextgarden.net/Generate_Authorlist_from_Head_Content > - > http://wiki.contextgarden.net/Titles#A_complex_graphical_element_under_the_chapter_title > > Wolfgang ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________