Returns or sets the line width of the outside border of an object. Returns wdUndefined if the object has outside borders with more than one line width; otherwise, returns False or a WdLineWidth constant. Can be set to True, False, or one of the following WdLineWidth constants: wdLineWidth025pt, wdLineWidth050pt, wdLineWidth075pt, wdLineWidth100pt, wdLineWidth150pt, wdLineWidth225pt, wdLineWidth300pt, wdLineWidth450pt, or wdLineWidth600pt. Read/write Long.