macOS still supports turning any file into a template, a feature first introduced in System 7 back in 1991.
Just Get Info on any file in the Finder, then check the "Stationary pad" box.
Just Get Info on any file in the Finder, then check the "Stationary pad" box.
I just looked it up and here's an official help page about it: https://support.apple.com/en-tm/guide/mac-help/mchlp1341/mac