Defines the width, in Himetric units, of an object's border or line. It is only used if the BorderStyle property is not configured to 5 (five, Null). Default value of this property is 0 (zero). This is an exception in E3's measuring system, because when its value is equal to 0 (zero), the object's line or border width is not defined in Himetric units, but in pixels. This property with a value equal to 0 (zero) indicates a one-pixel width.