Sets the line weight override value to the corresponding viewstyle. This method does not affect the defaul value of the layer. Thus, if no viewstyle is assigned, this method does nothing. 

Resets the "by standard" setting for this option to false. 

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.