Modify whether the sources in a particular layer can be interactively
selected by the user.
Sometimes you want to display a layer of sources, but you don't want the user
to be able to click on them for interactive selection. This message helps you
accomplish that.
Modify whether the sources in a particular layer can be interactively selected by the user.
Sometimes you want to display a layer of sources, but you don't want the user to be able to click on them for interactive selection. This message helps you accomplish that.
See also ModifyAllSelectabilityMessage.