The systems and methods maintain varying protection levels of related objects, such as when {HEAD ~ nodes} of a data structure are protected at {TAIL ~ the same or greater protection level} as their children nodes 
are protected at
The systems and methods maintain varying protection levels of related objects , such as when { HEAD ~ nodes } of a data structure are protected at { TAIL ~ the same or greater protection level } as their children nodes
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH