Hello, In the code below, the red vertical line extends beyond the edges of the cell. Thank you Fabrice \startuniqueMPgraphic{Vertical} linecap:=squared ; path p ; p := unitsquare xyscaled (OverlayWidth,OverlayHeight) ; drawoptions (withpen pencircle withcolor \MPcolor{red}) ; draw .5[llcorner p, lrcorner p]--.5[ulcorner p, urcorner p] ; setbounds currentpicture to p ; \stopuniqueMPgraphic \defineoverlay[Vertical][\uniqueMPgraphic{Vertical}] \startsetups[table:initialize] \setupTABLE[start] [align={middle,lohi},offset=0.5ex,width=1.5cm, foregroundstyle={\switchtobodyfont[10pt]}] \setupTABLE[1][2][background=Vertical] \stopsetups \starttext \startlinecorrection[blank] \startmidaligned \bTABLE[setups=table:initialize] \bTR \bTD \math{\red 0 {\rm (A)}} \eTD \bTD \math{+\infty} \eTD \eTR \bTR \bTD \eTD \bTD \math{+\infty} \eTD \eTR \eTABLE \stopmidaligned \stoplinecorrection \stoptext