CURVE EDITOR - little questions

  1. What is CURVE EDITOR for?

  2. What does the list of settings that opens when you select a point and click the right mouse button?

The curve editor is a retired module, and is no longer fully supported within Mocha. It is available, because users liked to try to ramp animation with non-linear algorithms but is basically a “use at your own risk” module that has been replaced by the dope sheet.