TODOs in Xcode: How to make them stand out?

Question

I am aware of the method of making them warnings, but I want to keep my legit warnings separate from my todos. I\'m also have yet to see xcode 4 highlight the todos like

Answer 1

UPDATE

As of Xcode 4.4; FIXME:, ???:, ????:, !!!: all work outside of a function/method.

ORIGINAL ANSWER (< Xcode 4.4)

xcode will highlight a TODO but only outside of a function.

//TODO: This will show in function drop down 
-(void)method1
{
    //TODO: This will not show
}

In addition; FIXME, ???, ????, !!!! do the same.