Usage
Click the cancel all button to remove all light sources of the current node and those below this node. In the status area the following prompt will appear:
are you sure?
In response to this prompt enter either y(es) or n(o), depending on whether you want to delete the light source(s) or not.
Comments
When the local lights toggle button is active, only local light sources that belong to the currently active node, and all nodes below that node, will be deleted. When local lights is deactivated, all lights in the tree will be deleted.
