The term 'Spot on the Screen' can be solved by the four-letter word 'BLIP'. A BLIP is a short burst of sound or light, often used to indicate the presence of an object on a radar screen. It is also used to describe a brief moment in time, such as a sudden burst of activity or a brief interruption. In the context of a computer screen, a BLIP is a small, bright spot that appears briefly before disappearing.