By hitting me, you make everyone understand why you have attacked all before me, as well as why you will hit all others that come after me.
closed as too broad by A E, Engineer Toast, Aggie Kidd, xnor, AJL Oct 5 '15 at 20:40
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The space bar. Each time you hit it, it ends the previous word and makes it and the next word that will be typed more readable.
Enter key (or submit button) or possibly Period key - Submitting your text explains why you struck keys earlier as well as providing context for your next submission