The macOS interface for working with printers, scanners, and–yes–fax machines has always been a little quirky. Apple built the printing component on top of the open-source CUPS protocol. (CUPS once stood for Common UNIX Printing System and now is just…CUPS.) As with many server components, Apple put a friendly layer on top of CUPS. And it mostly works. When it doesn’t, you can peel back the layer and look at what ticks underneath. This is useful for setting options
