I previously stumbled upon a way to add entries to the list box in Xcode's editor so as to divide the functions up in that view with comments.

I recently found that typing TODO: adds entries to the function selection list (which is actually a bit annoying), but I am not certain what the right keywords would even be to search for how to do this by means other than TODOs.

Does anyone know?

And of course I stumble upon it while looking for something else.