I am having a really hard time to grasp a concept about the difference in between Check/Uncheck and Enable/Disable in markers.
For checked/unchecked,as I understand it,checked means the marker is control point, and unchecked(no tick in the check box next to each marker) means the marker is check point.
So, what are the meanings of ‘Enable Markers’ and ‘Disable Markers’ respectively?
Thank you