Widget index / Feedback and layout · Download this HTML
Fit the entire page in the view
Ready
Ready — try the example.
States and behavior
Delayed hover/focus hint, Escape dismissal, supplemental status text.
Keyboard
Tab focuses the command; Escape dismisses its tooltip; Enter or Space runs it.
Scope and adaptation
The button has a meaningful visible label without a tooltip. Essential instructions must remain visible. This noninteractive tooltip uses aria-describedby.
Sources
Microsoft preliminary guide (1995), chapters 7–8 · Modern browser accessibility pattern
Original implementation; system colors are represented by CSS variables. The default 13 px system-font stack is a readable browser adaptation. The 1995 source is preliminary, not a final product specification. Test the target browser and native host before shipping.