System 7: Publish and Subscribe on a Network

Yes. When an edition is created, the publisher can save the edition file
on a shared file server (including your own disk if it is shared using
System 7 file sharing). Other users on the network can access the edition
file on the file server and subscribe to it.

For instance, Pierre needs to create a presentation using some numbers in
a spreadsheet that Marie has prepared on her system. Marie can publish
the numbers from her spreadsheet and save the resulting edition file to a
server that she and Pierre both share. Pierre can mount the file server and
subscribe to the numbers edition file in his presentation program. Whenever
Marie updates the numbers in the spreadsheet, the changes appear in
Pierre's copy.