Hi Esteban Iâm new and may be wrong and apologise if so ⦠! It just looked like the Crono package has a few things I didnât expect : * CrApplicationStarter * CrGtkConfiguration * CrWindowConfiguration * SpPresenter extension firstResponder * SpWindowPresenter extensions (2) These âCrâ classes seem to have some more general purpose behaviours that other SpApplications could use? And I would have thought the Gtk configuration would be outside Crono too? Also, presumably the extensions are candidates for repackaging outside/above Crono â¦.? This may be just a naming and packaging thing rather than any criticism of design. In summary, as a simple consumer of the framework there was (some) surprising detail in the Crono package and classes that didnât seem relevant to any new application I would be writing. Hence I would have hoped not to have to clone these details (or even deal with themâ¦). Does that sound fair? - or do I have the wrong end of the stick !! Cheers Mark