A system and method allowing a broadcaster to deliver short-term cyclic data along with the main content of the broadcast stream, synchronized with that main content, and for allowing users to have access to that information for longer periods than a typical data broadcast system would allow. The polymers according to the invention exhibit improved efficiency and a longer lifetime, in particular on use in OLEDs. If desired, the chemical holder may include a first compartment, a second compartment, and a third compartment. Such techniques are believed to provide better results than achieved using acute hemodynamic optimization techniques. In yet another aspect of the invention, the target data type is passed with the associated datum, via the zero or more intermediate levels to the target level.