Toggle automatic docstring checking (Checkdoc minor mode).
With a prefix argument ARG, enable Checkdoc minor mode if ARG is
positive, and disable it otherwise. If called from Lisp, enable
the mode if ARG is omitted or nil.
In Checkdoc minor mode, the usual bindings for `eval-defun' which is
bound to
Uses keymap `checkdoc-minor-mode-map', which is not currently defined.
M-x checkdoc-eval-defun and `checkdoc-eval-current-buffer' are overridden to include
checking of documentation strings.
Uses keymap `checkdoc-minor-mode-map', which is not currently defined.
(fn &optional ARG)