iTuneArtwork what's for ?

Hello
Every time you create an Cocos22X project (on mac) , there is a file iTunesArtWork in the Resources folder. What is the purpose to have this file there ?
Thanks
Dac

It’s required by apple. I find the explaining page here http://developer.apple.com/library/ios/#qa/qa1686/_index.html

Thank you very much for enlightening me