nndoc-add-type
nndoc-add-type is an autoloaded Lisp function in `nndoc.el
'.
(nndoc-add-type DEFINITION &optional POSITION)
Add document DEFINITION to the list of nndoc document definitions.
If POSITION is nil or `last', the definition will be added
as the last checked definition, if t or `first', add as the
first definition, and if any other symbol, add after that
symbol in the alist.