[NTG-context] showfont with xetex (syntax changed?)

Hi, when in february 2006 I asked for an alternative to fontspec that could show me opentype features, Adam wrote: I find that the lcdf typetools are a tremendous help: otfinfo -f ~/Library/Fonts/WarnockPro-Regular.otf and I can test the features with: \showfont["Warnock Pro: +smcp"] Today this showfont-line doesn't work anymore: \definetypeface[oneliner][rm][Xserif][Warnock Pro][default] \starttext \oneliner Test WQG 0196 \showfont["Warnock Pro: +smcp"] \stoptext Someone knows what to do? Thanks, Steffen