I'm with Osgeld on this 
Still its just a matter of habit, but I would think it would be somewhat "unintuitive" to have something work on something unselected (e.g. a line). But if it were an option you could enable/disable, why not.
I'm with Osgeld on this Still its just a matter of habit, but I would think it would be somewhat "unintuitive" to have something work on something unselected (e.g. a line). But if it were an option you could enable/disable, why not.