I understand that the bookmark feature of NSURL is (more or less, but most more) the same. cit: "Whereas path- and file reference URLs are potentially fragile b

I understand that the bookmark feature of NSURL is (more or less, but most more) the same. cit: "Whereas path- and file reference URLs are potentially fragile between launches of your app, a bookmark can usually be used to re-create a URL to a file even in cases where the file was moved or renamed."