Did you try clicking on the "Switch editor mode" button near the top right?
It's a square with two "A's" in it.
Comparing his screenshots to my window, I don't even have that button. I have the button next to it that increases/decreases the size of the window. But that's it.
Hearts are tough, she said, most times hearts don't break, and I'm sure that's right . . . but what about then? What about who we were then? What about hearts in Atlantis?