[leejoramo]

The stationary feature has existed since the “Classic” days. Probably MacOS 7. So it comes from the HFS era.

It would be more accurate to say when you open a file with the Stationary flag set, a new of copy of the document is open in the default application. I don’t think a file system copy is created until you save.

[johndoe0815]

Stationary pads were already implemented in the Lisa UI, but it took quite some time to show up in classic MacOS - https://www.applefritter.com/node/3198