The Ubuntu operating system is to replace its application menus with a  “head-up display” (HUD) box. According to Mark Shuttleworth, Lead design and product strategy person at the company behind Ubuntu:

We can search through everything we know about the menu, including descriptive help text, so pretty soon you will be able to find a menu entry using only vaguely related text (imagine finding an entry called Preferences when you search for “settings”).

One of the comments states:

I suspect that applications will need to give help documentation a more significant place in the development of the application than it currently enjoys. Help seems the logical place to embed command discovery in such a system especially in connection with a capacity for fuzzy searches.