{TAIL ~ The casing} includes a casing body having {HEAD ~ an upper casing member} and a lower casing member joined together 
{ TAIL ~ The casing } includes a casing body having { HEAD ~ an upper casing member } and a lower casing member joined together
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH