What's the Vertical Bar in the Photo?

[unit]

The vertical bar to the right of the Average MPG gauge in the  the dash cluster photo has eluded me.  I think it has something to do with fuel mileage but I haven't seen a description in any of the manuals or other literature I've seen for the 2020 2500HD trucks.  What is it and how does it work?

[BowtieOwner]

15 minutes ago, unit said:

The vertical bar to the right of the Average MPG gauge in the  the dash cluster photo has eluded me.  I think it has something to do with fuel mileage but I haven't seen a description in any of the manuals or other literature I've seen for the 2020 2500HD trucks.  What is it and how does it work?

I believe that is the "scroll bar". As you scroll through the pages the little white portion should move up and down accordingly. 

[James Pinto]

15 minutes ago, BowtieOwner said:

I believe that is the "scroll bar". As you scroll through the pages the little white portion should move up and down accordingly. 

Yes, you can go left or right with the arrows then when you see the scroll bar on certain pages you can scroll the wheel up of down.

[unit]

Thanks gentlemen, you learn something new everyday!