{TAIL ~ Each 3D point sample} includes {HEAD ~ 3D coordinates}, as well as intensity and colour information, and optionally, surface normals to assist illumination models 
{ TAIL ~ Each 3D point sample } includes { HEAD ~ 3D coordinates } , as well as intensity and colour information , and optionally , surface normals to assist illumination models
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH