Use
The initial code is 0000
Dreamscape logo in front of you, you'll find 2 buttons on the right, and 1 on the left:
_ press the large button on the right to unwind the cable,
_ press the end of the cable firmly into its lock: hear 2 "clicks",
_ scramble the code: it's locked,
_ reset 0000,
_ press the left button, the cable is released,
_ press the right button, the cable retracts.
Code change
You need to be on the right combination to be able to change the code.
The initial code is 0000.
With the Dreamscape logo in front of you, you'll find 2 buttons on the right, and 1 on the left:
_ hold down the small button on the right (the top one) and add the combination of your choice
_ release the button: the code is changed.
See the "use" paragraph for how to use it. Everything will be identical, except that the code will now be yours.
Number of possible combinations
With 4 digits, there are 10,000 possible combinations = 9,999 + 1 (the initial combination 0000) = 10,000.