\setupbodyfont[10pt]



\starttext


\startMPinclusions
    pickup pencircle scaled 0.05pt;
    defaultpen := savepen;
    
    picture crosshair;
    crosshair := image(draw fullcircle scaled 2pt;
                       draw (0,-2pt)--(0,2pt);
                       draw (-2pt,0)--(2pt,0);
                      );
    
    bboxmargin := 0;
\stopMPinclusions


\startMPpage    
    for item within textext("$(h,g)$"):
        draw bbox item withcolor 0.8white;
        draw item;
    endfor;
    
    draw crosshair;
\stopMPpage


\stoptext