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