Reference a script from Editor folder

What I do and so does a large number of people; Create an empty GameObject and attach all scripts that aren't specific to an object in the scene to that empty object. This way whenever you want to access these scripts you can just reference this empty GameObject.

To create a reference?

According to wiki.unity3d, "The Editor folder name is a special name which allows your scripts access to the Unity Editor Scripting API"

Now to my understanding, you can't. For The Editor Folder is allows your scripts to gain access to the Unity Editor. Because if we were to get a standard C# Script, By Default, the public class defines it as a MonoBehavior. And by default the Editor makes it a Editor. If you reference a MonoBehavior in a Editor script, It becomes a MonoBehavior

I may be wrong, stuff like this I'm not the best at, But I tried getting you a answer as soon as possible just so you can keep working.

Good Luck