In the preferred embodiment, that continuously modifies in real time, {TAIL ~ the point samples} are modified by {HEAD ~ 3D operators}, e.g., delete, update, and insert operators 
In the preferred embodiment , that continuously modifies in real time , { TAIL ~ the point samples } are modified by { HEAD ~ 3D operators } , e.g. , delete , update , and insert operators
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH