I did a C-h m in an M-x dig mode buffer and hoped it might show the keys
available to do stuff.  There isn't anything to do in fact, but if the
keymap were in the docstring it'd tell me that :-).

2009-09-21  Kevin Ryde  <user42@zip.com.au>

	* net/dig.el (dig-mode): Show dig-mode-map in the docstring.