efaq: Wrapping words automatically

 
 5.15 How do I make Emacs wrap words for me?
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 Use ‘auto-fill-mode’, activated by typing ‘M-x auto-fill-mode’.  The
 default maximum line width is 70, determined by the variable
 ‘fill-column’.  To learn how to turn this on automatically, see See
 Turning on auto-fill by default.