After sending a message, sometimes I accidentally type into the message box. Then when I go back to the main screen I see the garbage text with Draft: next to it.

1) I'd like a way to clear that draft with having to go into that thread and either backspace over the entire message or Select All and backspace

2) From inside the thread I would like to be able to clear the whole message box with a single touch, but in a reversible way so I can get it back if I did it by accident

How do I delete a draft?
I don't even know how I created one!

Yes, please do!