system tracking changes in nodes, making sure only these nodes and the ones that depend, are executed. Further the 'time cursor' now counts down to indicate which node is being done. Also: you now can disable the "use nodes" button in the header, edit all changes, and when you press that button again it nicely executes the changes. Still on the todo: - make compositing threaded - find a way to nicely exit compositing on input events... so the UI keeps being responsive - idea; a 'percentage' menu in header to enforce calculations on smaller images temporally