An accelerator is a key or key combination that invokes the action of some component without the location cursor being on the component when the accelerator is pressed. Accelerators are most commonly used to activate Menu items without first posting the Menu. You should provide accelerators primarily as a matter of utility, not for design conformity. If the button with the accelerator is within a primary or secondary window, or within a Pulldown Menu system from its MenuBar , it must be activatable whenever the input focus is in the window or the MenuBar system. If the button with the accelerator is within a Popup Menu system, it must be activatable whenever the focus is in the Popup Menu system or the component with the Popup Menu.
Applications can provide accelerators for any button component.
Implementations must support accelerators in PushButtons and ToggleButtons that are in Menus. If a button has an accelerator, the accelerator must be shown following the label of the button.