* lisp/emacs-lisp/checkdoc.el
(checkdoc-spellcheck-documentation-flag): Mention
`ispell-kill-ispell' (bug#6221).
defun - Spell-check when style checking a single defun.
buffer - Spell-check when style checking the whole buffer.
interactive - Spell-check during any interactive check.
- t - Always spell-check."
+ t - Always spell-check.
+
+There is a list of Lisp-specific words which checkdoc will
+install into Ispell on the fly, but only if Ispell is not already
+running. Use `ispell-kill-ispell' to make checkdoc restart it
+with these words enabled."
:type '(choice (const nil)
(const defun)
(const buffer)