This way you can press some keys and alter the prototype-app-state & rerender a screen OR you can trigger ad-hoc overlays or screens, for situations where you want to simulate some "any-time" screens/events (e.g. physical devices interactions and software acknowledge; software events triggered by some remote event...).
This way you can press some keys and alter the prototype-app-state & rerender a screen OR you can trigger ad-hoc overlays or screens, for situations where you want to simulate some "any-time" screens/events (e.g. physical devices interactions and software acknowledge; software events triggered by some remote event...).