Please don't think I'm stupid or retarded, but the documentation is frustrating.
I learned the ManiaScript-Basics on the german Tutorial by destroflyer. "Integer", "Real" etc...
I saw some other tutrials (for example by AK) too, but it didn't help, because I want to create an editor plugin.
At destroflyers page (last update 2012) Is a big WIP at the EditorPlugin-Part. AK wrote the same

The only thing i find about EditorPlugins in the documentation is this text
?The official ManiaPlanet Documentation from 2014/15 wrote:Map editor plugins
It's possible to extend the possibilities of the map editor with plugins written in ManiaScript. These plugins range from a simple autosave function to a fully random map generator.
Where is a full tutorial about the MapEditor-plugins?
Please again, don't think I'm stupid, that's a frustrating fact.