When you publish data for automatic updating by choosing "Create
Publisher..." from the Edit menu, you also create an edition. An edition
is a separate file that is updated when you change the original material.
The edition file can be saved on a disk, in a folder, or on the desktop.
If you move or rename an edition file, the connection between the publisher
and any subscribers remains intact.
If you delete the edition file, the connection between a publisher and its
subscribers is broken.