smidr.input

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IUIFocusable	A component that can hold keyboard focus (text inputs, key-capture rows). Focus is managed by `UIFocus`; while a focused component `capturesKeyboard()`, the host application must suppress its own keybinds (`UIFocus.typing`).
UIFocus	Keyboard focus manager. Exactly one `IUIFocusable` holds focus; `typing` is the single flag host applications check before processing their own keybinds.
UIPointer	Global pointer state shared by `UIRoot` and the widgets.