References Returned for the Insertion Location property
The Finder's Insertion Location property returns a reference to the object to which new information can currently be added. For example, if the New Folder command in the File menu is active, the insertion location is a reference to the container in whose content space the new untitled folder appears when you choose New Folder. This container can be a folder, a disk, or the desktop:
tell application "Finder"
insertion location
end tell
--result: desktop of application "Finder"
If the active content space is a sharing window or an information window, the insertion location is a reference to the container to which the window belongs.
