How do I load the map editor

[Yung Kotick]

Is there any way to load the Doom 3 editor? It lets me load the server and that stuff but it won't let me load a map editor, and the shortcut tricks I found on Google didn't work.

[why420]

If you are still interested:
https://www.youtube.com/watch?v=ALNWUx9BrKI