Toggle Subword mode in all buffers.
With prefix ARG, enable Global-Subword mode if ARG is positive;
otherwise, disable it. If called from Lisp, enable the mode if
ARG is omitted or nil.
Subword mode is enabled in all buffers where
`(lambda nil (subword-mode 1))' would do it.
See `subword-mode' for more information on Subword mode.
(fn &optional ARG)
Non-nil if Global-Subword mode is enabled.
See the command `global-subword-mode' for a description of this minor mode.
Setting this variable directly does not take effect;
either customize it (see the info node `Easy Customization')
or call the function `global-subword-mode'.