TODOs in Xcode: How to make them stand out?
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.
One way is to use Xcode's search feature. If you mark your code with // TODO:..., you can search the entire project for // TODO and generate a nice list of tasks.
Also, note that comments starting with // TODO: or // FIXME: that are outside the scope of any method will appear in the method popup menu, just like #pragma mark lines.