Indicates whether or not controls should use two-level focus. Two-level focus is when separate operations are needed in some controls to first enter a control and then to perform operations on the control. Two-level focus is needed on devices that provide directional arrow keys and a select key but do not provide keys for navigating between one control and another. On these devices a focused control may be either internally focused - in which case arrow keys operate on the control - or externally focused, in which case arrow keys are used to navigate focus to other controls.
On embedded platforms JavaFX makes an attempt to initialize this ConditionalFeature based on what input peripherals are attached. On desktop platforms this ConditionalFeature will typically default to false.
Diagram: Platform