Pressing Command-W closes the browser window, not the window in the emulator, which may seem obvious to your brain but not your fingers. Here’s one important tidbit to know if you’re planning to use macos9.app or the other emulators to do actual work. To bridge the worlds, Parparita created a “server” called The Other World that lets you drag and drop files to transfer them between the emulator and your modern Mac. As we wrote last year, the Mac OS 9 emulator has similarly faithful functionality to the original that allows you to create files and export them to your modern Mac. Parparita’s Infinite Mac series includes system6.app, system7.app, and macos8.app for System 6, System 7, and Mac OS 8, respectively.
I've written an end-of-year post about getting Mac OS 9 to run in the browser ( ) and other recent developments: - Mihai Parparita January 3, 2023 Infinite Mac continues to be a lot of fun.