# Constants
CommandBack is the command for a back action such as the Android back button.
StagePaused is the Stage for inactive Windows.
StateRunning is for active Windows.
# Structs
CommandEvent is a system event.
DestroyEvent is the last event sent through a window event channel.
A FrameEvent requests a new frame in the form of a list of operations that describes what to display and how to handle input.
Insets is the space taken up by system decoration such as translucent system bars and software keyboards.
A StageEvent is generated whenever the stage of a Window changes.