Sets the flag that determines whether the line weight override of this section symbol standard object is set according to the owner standard object which this section symbol standard object belongs to. If the flag value is "true", also copies the layer default value for the line weight override to the appropriate viewstyle. 

The override line weight value is the value according to the viewstyle. If no viewstyle is assigned, then the override line weight value is the value according to the layer default.