Try it out and then fix it. :) (Please help!)
Credits are inside. Why a pen-based system? A pen-based Scratch OS environment will allow for more customization and also facilitate significantly better 3rd-party development. If this works well enough I will develop an SDK so that it will be easy to make interactive apps and games for the Doors platform. If used, large components of the Doors Osmium UI will stay the same. Likely first-party apps will launch from the slider. 3rd-party apps will have pen-based icons on the desktop.