By default, using C-x 3 in emacs splits the window vertically into two buffers. This is very convenient, but for some reason it disables word wrap (even when word wrap is set in the options). To enable word wrap on a vertical split, add the following to your .emacs file (typically located in your home directory):
;; Word wrap on vertical split (setq truncate-partial-width-windows nil)
Alternatively you can enter the same command during your current session if you don't want this to be the default behavior.





