Hello, the kerning with mode=node seems not to work as desired, the gaps after the kerned character are to big. Here is a test file: \setupcolors[state=start] \definefontfeature[base][mode=base,kern=yes] \definefontfeature[node][mode=node,kern=yes] \definefont[MinBase][name:minionpro-regular*base] \definefont[MinNode][name:minionpro-regular*node] % \definefont[MinBase][Serif*base] % \definefont[MinNode][Serif*node] \starttext \startbuffer[Kerning] \startlines Wer Tat Ver VAI \stoplines \stopbuffer \startTEXpage \startoverlay {\hbox to 1cm {\vbox{\MinBase\darkred{\getbuffer[Kerning]}}}} {\hbox to 1cm {\vbox{\MinNode {\getbuffer[Kerning]}}}} \stopoverlay \stopTEXpage \stoptext Greetings Andreas