i've noticed that NSFileManager has an attribute to hide the files extension, but what if i want to make the whole file hidden? i understand i could simply add a "." to the beginning of the file name, but how are hidden files written that don't have "." at the beginning of their name? i read somewhere it has to do with setting the hidden attribute in the resource fork of the file, but how can i access/set that resource fork from my cocoa app?