adding verification on both sid:es of xExtent
adding verification on both sid:es of xExtent

alyssaq/plottable,alyssaq/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,softwords/plottable,palantir/plottable,iobeam/plottable,palantir/plottable,iobeam/plottable,onaio/plottable,danmane/plottable,onaio/plottable,jacqt/plottable,iobeam/plottable,danmane/plottable,onaio/plottable,danmane/plottable,softwords/plottable,alyssaq/plottable,gdseller/plottable,gdseller/plottable,NextTuesday/plottable,jacqt/plottable,gdseller/plottable,softwords/plottable,palantir/plottable,palantir/plottable,jacqt/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,RobertoMalatesta/plottable