They aren't seen at all, nor are they counted. So this makes it easy for you to dress up your commands so they make sense. That can be very handy, especially if you find that the modem arrived from the factory with the wrong settings for your situation. Unless your software is some dimbulb freeware offering, you should be able to turn on the software's capture mode and save the commands the modem shows you on the screen. It calls up the settings made by the factory.
Modems sometimes have dozens of other commands.
We'll look at some of them another time, but we should finish this miniseries with a quick look at S-Registers. They're places in the modem's memory where its brains are located. You can change many of them. One S-Register many folks know about is S0. It controls the modem's response to a telephone ring.