whitespace-mode

whitespace-mode is an interactive autoloaded compiled Lisp function in `whitespace.el'.


(whitespace-mode &optional ARG)

Toggle whitespace visualization (Whitespace mode).
With a prefix argument ARG, enable Whitespace mode if ARG is
positive, and disable it otherwise. If called from Lisp, enable
the mode if ARG is omitted or nil.

See also `whitespace-style', `whitespace-newline' and
`whitespace-display-mappings'.