Odds and Ends

You can take a screenshot by simultaneously pressing the first and fourth "soft buttons" (the buttons under the screen).

Soft buttons 3 and 4 together gives you a shortcut to the "global tools" screen.

Pressing soft buttons 1 and 2 simultaneously while in a Global menu adds a new "User Type" parameter to the Global "MAIN 1" screen, with value "developer". That also enables new fields in other menus; but presumably, you're on your own if they break anything.

The PC4 powers up in the state it was in when it last exited "global" mode.