Variable: vt100-wide-mode
vt100-wide-mode is a customizable variable defined in vt100.el.gz.
Value
nil
Documentation
Non-nil if Vt100-Wide mode is enabled.
See the vt100-wide-mode(var)/vt100-wide-mode(fun) command
for a description of this minor mode.
Setting this variable directly does not take effect;
either customize it (see the info node (emacs)Easy Customization)
or call the function vt100-wide-mode(var)/vt100-wide-mode(fun).
Key Bindings
Source Code
;; Defined in /usr/src/emacs/lisp/term/vt100.el.gz
;;; Controlling the screen width.
(define-minor-mode vt100-wide-mode
"Toggle 132/80 column mode for vt100s."
:global t :init-value (= (frame-width) 132)
:group 'terminals
(send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
(set-frame-width terminal-frame (if vt100-wide-mode 132 80)))