Elevator trim indicator has horizontal green line

[BMW_X6M]

On the SkyView I have an elevator trim indicator. It has arrows that move up and down in relation to the trim position. I can't understand this green line though because it is not centered in the graphic display, but is slightly above the gray center line of the display. I have found no reference to this green line in either the installation or operation literature.

This is nothing more than a nagging question of why is it there? :-?

 

[FlyRV8]

I have the same thing on my installation.
The green line is the physical neutral position ( trim tab lined with the elevator).
The green mark is not necessary at the center of the elevator trim indicator because your trim servo could for example pitch up more than pitch down (in a Van's RV it is written on the manual).

This is what I deducted from what I could see on my installation. If I'm wrong, I'm sure someone will correct me.

Hope this will help you

 

[dynonsupport]

Yep, it's meant to be the takeoff position. You can set where it goes in the trim calibration menu.