Applications may include various displays presenting images, numbers, pointers, paths, vectors, or data by digital screens, watch faces, or {HEAD ~ other devices} integrated with or remote from {TAIL ~ the processor} calculating the vector back to the point of origin 
Applications may include various displays presenting images , numbers , pointers , paths , vectors , or data by digital screens , watch faces , or { HEAD ~ other devices } integrated with or remote from { TAIL ~ the processor } calculating the vector back to the point of origin
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