# A screen is a function which instanciates all components of a screen into a temporary component.
# Thus, the global stuff is a screen, too.
# In a screen, components can either be instanciated from the class-tree, cloned (copied) or
# A screen is a function which instanciates all components of a screen into a temporary component.
# Thus, the global stuff is a screen, too.
# In a screen, components can either be instanciated from the class-tree, cloned (copied) or