Editor feature: Undo Ctrl/Cmd + Z

[iaomw]

It's common to have Undo feature in any editor. When I was playing with the demo, this feature seems missing.

However, it's not easy to build a robust undo feature while the engine is still evolving. It's good to have before next millstone.

[hyv1001]

Yes, the undo/redo mechanism is very necessary, however, it may take a long time to implement an elegant and robust solution. This feature is in our roadmap, but the priority is not very high. Currently, we are focusing on course-related feature development.