[NTG-context] What is required to make \setuplayout work?

I’ve been trying to define a layout that just has a 5mm no-printing edge around the paper and has all the rest for \textwidth and \textheight. No header, footer, pagenumber, etc. Just as much space as I can get out of a standard A4. But the following (following the manual and ConTeXtgarden): \setuplayout[leftedge=5mm,top=5mm,rightedge=5mm,bottom=5mm, leftmargin=0mm,rightmargin=0mm, margindistance=0mm,edgedistance=0mm, topdistance=0mm,headerdistance=0mm,footerdistance=0mm,bottomdistance=0mm] \showlayoutcomponents % doesn’t seem to do anything \showframe % this works \starttext \input knuth \stoptext Doesn’t seem to change the layout. What am I missing? G