How Can I Get Back From The Menu Editor To The Game View?

I know this is a silly question but I am currently trying to get back from the menu editor to the game editor and cannot find a way to do so. I've clicked whatever could be clicked and yet cannot find a way. I am using the trial version btw. Thanks in advance for the help.

 

I am really stuck in the Game Mind Map and can't figure out how to get back. I've watched all the tutorials but the button left of it doesn't exist on my version.

 

Just double-click a world (blue ones) or a user interface node (green) to edit.

 

Thank you, that was hard for me to figure out..

 

You're welcome. Glad I could help. I'm struggling too to make something off this great program