Return true if chartType is one of Line subtypes. Subtypes set corresponds to the appropriate set in PowerPoint see Change Chart Type dialog in PowerPoint Line LineWithMarkers PercentsStackedLine PercentsStackedLineWithMarkers StackedLine StackedLineWithMarkers Line3D....true if chartType is one of Line subtypes. Subtypes set corresponds...Type” dialog in PowerPoint): Line, LineWithMarkers, PercentsStackedLine...