I reckon it's this bit (taken from DanGBs Vag-com/VCDS guide :
Automatic Window Closing/Opening
This enables all the windows to close or open if you hold down the lock/unlock button on the keyfob, and or holding closed/open the keylock on the door
I have found on newer cars (MY07?) these features are already active, but on my MY0 I had to activate it.
Module 46 - Central Conv.
Coding
Byte 4
bit 0 - Comfort opening power windows via door lock active
bit 2 - Comfort opening power windows via remote control active
bit 3 - Comfort closing power windows via door lock active
bit 5 - Comfort closing power windows via remote control active
Automatic Window Closing/Opening
This enables all the windows to close or open if you hold down the lock/unlock button on the keyfob, and or holding closed/open the keylock on the door
I have found on newer cars (MY07?) these features are already active, but on my MY0 I had to activate it.
Module 46 - Central Conv.
Coding
Byte 4
bit 0 - Comfort opening power windows via door lock active
bit 2 - Comfort opening power windows via remote control active
bit 3 - Comfort closing power windows via door lock active
bit 5 - Comfort closing power windows via remote control active