Hi all, there seems to be an incompatibility between metafun's anglebetween macro and the metaobj package. Sample input: \startMPinclusions input metaobj; \stopMPinclusions \startreusableMPgraphic{ff} draw anglebetween(origin--(0,100),origin--(100,0),(btex $\vartheta$ etex)); \stopreusableMPgraphic \starttext \reuseMPgraphic{ff} \stoptext This results into: error in metapost run : fftest-mpgraph.mp:124 Running 'mpost fftest-mpgraph' manually shows the following error: ! Missing argument to arctime. <to be read again> (19.92523) on->(arctime.if(EXPR0)>0:(EXPR0) else:(arclength((EXPR1))+(EXPR0))fi.of(EXPR1... <to be read again> ; anglebetween->...nta:=point.anglelength.on(EXPR2); pointb:=point.anglelength.... l.121 )) ; ? I have tried to locate the problem more precisely, but my metapost skills are not sufficient, so I have to ask for help here. Regards, Eckhart