mpgraph does not appear to work properly under mkiv. %% minimal example %% \starttext \startuseMPgraphic{test} input graph draw begingraph(16cm,12cm); setrange(whatever,whatever,whatever,whatever); gdraw (0,0) -- (1,1) ; endgraph; \stopuseMPgraphic \startTEXpage \useMPgraphic{test} \stopTEXpage \stoptext %%%%%%%%%%%%%%%%%%%%% Works correctly under mkii (texexec) but not under mkiv (context). Error message: mplib | mp terminal: (/home/local/context/tex/texmf/metapost/base/graph.mp ! Redundant equation. <to be read again> ; l.143 Gmargin.low=-.07; % bbox fraction for default ra... ! Redundant equation. <to be read again> ; l.144 Gmargin.high=1.07; % bbox fraction for default ra... ) mplib | mp error: unknown, no error, terminal or log messages mplib | mp terminal: [1] mplib | mp error: unknown, no error, terminal or log messages Alan