How do I input M-shift-return in Aquamacs

I'm trying out org-mode and the tutorial says Meta-Shift-Enter is bound to org-insert-todo-heading, and I did a desc开发者_StackOverflow中文版ribe-function to verify it is bound to that key in my environment

I tried inputting it using escape as meta, so I typed ESC, then holding shift down, enter. I got an error message that ESC- is not defined. Is there a special way I should input this key sequence?

Have you read the Aquamacs FAQ, specifically the section on the meta key?