Turn on the modem while you hold down the button on the front panel. The modem will beep three times. Once it has beeped the third time, press the button three times in rhythm with the first three beeps. If your timing is right you will hear the modem speak digitally recorded voices of three developers saying their names. (Great!)
 
Any StyleWriter
Release and then hold down the power button until the printer starts to print. This is a way to check the printing quality, but you will also see a picture of your printer, and maybe a company credit depending on the machine.  The first StyleWriter was known as "Tabasco"
