How do DropStacks work?

[CookieMonster]

When dragging a file to a dropstack is the file copied to the dropstack or moved ? I want to know if it's safe for me to delete the file in the original location, or will the file be safe in the drop stack ?

[TheQwerty]

When you drop on a stack the path of the item is added to the corresponding Paper Folder - the item is not moved or copied, its path is written as a textual link in the plain-text file representing that paper folder.

It's as-if you kept a file on your desktop named "Faves.txt," where instead of dropping onto it you just open the file in notepad and type out the path to the item.

If you delete the item, then the paper folder/drop stack will contain a path that corresponds to nothing, and your item will be gone.

[CookieMonster]

Thanks