Hi, as already mentioned there is a problem with PDF layer... or with the way I use them. This is an old example, so it's maybe outdated. Both marks produce non valid PDF here. \setupcolors[state=start] \setupinteraction[state=start] \pdfcompresslevel0 \defineproperty[layerA][layer][title={layer_A},state=start] \starttext \startproperty[layerA] text %\framed[width=160mm,height=120mm]{\tooltip{A text with...{a tooltip}}% \stopproperty \stoptext Peter