Usage ----- To toggle the mode locally: M-x vi-tilde-fringe-mode To toggle the mode globally: M-x global-vi-tilde-fringe-mode To turn it on automatically only for programming modes: (add-hook 'prog-mode-hook 'vi-tilde-fringe-mode) Customization ------------- Open the customization group buffer: M-x customize-group RET vi-tilde-fringe RET There you can change the bitmap array or the face of the symbol drawn in the fringe. By default the symbol is a tilde :-) and its face simply inherits from `default'.