I have started to use the FIXME, TODO, ??? and !!! tags in XCode but have am finding it painful that it does not recognise th
FIXME
TODO
???
!!!
In xcode 4.1 (don't know if this works in previous versions) I write
#warning TODO: fix this later...
to get a compile warning or
#error FIXME: fix now!
to get a compile error.
I also add these to the code snippet library to make it really ease to add todos.