checkdoc-start is an interactive autoloaded compiled Lisp function in `checkdoc.el'.

(checkdoc-start &optional TAKE-NOTES)

Start scanning the current buffer for documentation string style errors.
Only documentation strings are checked.
Use `checkdoc-continue' to continue checking if an error cannot be fixed.
Prefix argument TAKE-NOTES means to collect all the warning messages into
a separate buffer.