widget-add-documentation-string-button

widget-add-documentation-string-button is a compiled Lisp function in `wid-edit.el'.

(widget-add-documentation-string-button WIDGET &rest ARGS)

Insert a new `documentation-string' widget based on WIDGET.
The new widget becomes a child of WIDGET, and is also added to
its `:buttons' list. The documentation string is found from
WIDGET using the function `widget-docstring'.
Optional ARGS specifies additional keyword arguments for the
`documentation-string' widget.