audio30 - how to enter code?

[Kieran28]

I downloaded the manual for the audio30, and in the section on entering the security code, it says:

Entering the code number
Switch on the radio. “CODE” will appear on the display. Using the buttons on the alpha-numeric keypad, enter the five digit code. Confirm by pressing the "OK" key.

QUESTION: Where/what is the "OK" key on an audio30 head unit?

[Kieran28]

Never mind... I figured it out. I guessed it might be a "soft" key, and it was.