menu-choice tag should be prettier, something like the abbreviated
menus in Open Look.
:tab-order.
property-list widget.
association-list widget.
key-binding widget.
widget widget for editing widget specifications.
TeX-printer-list for an explanation.
widget-prompt-value should give type specific help.
describe-function or
widget-browse-other-window and friends directly, instead of going
through apropos. If more than one function is valid for the
symbol, it should pop up a menu.