- help-xref-stack-item idna-program installation-directory
- line-spacing mark-active mouse-selection-click-count
- mouse-selection-click-count-buffer ps-print-color-p rmail-default-file
- rmail-default-rmail-file rmail-insert-mime-forwarded-message-function
- show-trailing-whitespace smtpmail-default-smtp-server tool-bar-mode
+ help-xref-stack-item idna-program installation-directory line-spacing
+ mark-active mouse-selection-click-count mouse-selection-click-count-buffer
+ ps-print-color-p rmail-default-file rmail-default-rmail-file
+ rmail-insert-mime-forwarded-message-function show-trailing-whitespace
+ smtpmail-default-smtp-server temporary-file-directory tool-bar-mode