On Jan 25, 2012, at 2:58 AM, Bernie wrote:

> 
> rc wrote:
> 
>> 
>> There are instances where I'd like to save a collection of files, and have it present as a single file in the Finder, same as the Finder makes an app appear that way.
>> Such might be a custom file format where there's a main image and collections of layers as separate subfiles, for instance. 
>> Is it possible to do that? Or do I need to save out all into a folder and just stick a custom icon on it basically, then treat the folder as a 'file' within my app?
>> 
> 
> 
> [1] Decide on an extension and icon, then add doc type to your Info.plist, setting LSTypeIsPackage to true. 

(handy guide snipped)

Thank you much Bernie. Can use that for Snapshots export too, and my new multi clipboards feature.

Robert