Hello. How to create custom editor type to select it in the list?
If you add an addon to the game engine, then a new type of editor is added.
If you add an addon to the game engine, then a new type of editor is added.
This is a custom node editor, if you go into the Text Editor and select Templates > Python > Custom Nodes it will show you how you can set up your own.
You can also check out how it’s done in addons like Animation Nodes