Hi list, I'm having some trouble with MetaPost in general and MetaObj in particular. I hope someone on this list can assist me here. I'm trying to run the appended ConTeXt file with a quite simple object "Segment" (from the manual [1], section 2.1). This script works fine as it is. I wanted to add a simple TeX label ("\tt \overbar{E}") to the drawing macro, but failed. When including the line marked with "% 1" the TeX run fails. I don't understand why. The line with "% 2" is taken frome the metaobj manual (section 5.8) [1], but including this doesn't work either. It would be great if someone could tell me what's wrong with the mp-code below and explain how to place a (TeX) label inside a metaobj object. Thanks in advance, Stefan. [1] http://tex.loria.fr/prod-graph/momanual.pdf PS: Both variants fail with mp error messages like this: "mplib > mp terminal: ! Inconsistent equation (off by 1). <to be read again> ; assignObj->(SUFFIX0)=incr(nObj_); iname_[(SUFFIX0)]=str(SUFFIX0);addclass_((S... newSegment->...roup.assignObj((SUFFIX2),"Segment") ;ObjPoint.a,b;ObjCode"@##b... <to be read again> ; <*> ...ar {E}") shifted n.a; enddef; newSegment.s; s.a=origin; drawObj(s); ; ! Redundant equation. <to be read again> ; assignObj->...bj_);iname_[(SUFFIX0)]=str(SUFFIX0); addclass_((SUFFIX0),(EXPR1... newSegment->...roup.assignObj((SUFFIX2),"Segment") ;ObjPoint.a,b;ObjCode"@##b..." <=======================================> \startMPinclusions input metaobj; \stopMPinclusions \startMPpage vardef newSegment@#= assignObj(@#,"Segment"); ObjPoint a,b; ObjCode "@#b-@#a=(1cm,2cm)"; enddef; def drawSegment(suffix n)= draw n.a--n.b; % draw btex \tt \overbar{E} etex shifted n.a; % 1 enddef; newSegment.s; % ObjLabel.s(btex hello! etex) "labpoint(a)"; % 2 s.a=origin; drawObj(s); \stopMPpage <=======================================>