Maestro 450I elevation and height clearification

I’m looking at a 450i radio in maestro. go to the configuration page. Notice height and elevation.

i would assume that height - is the height above the ground and elevation is the distance above sea level.

first: the i with the circle around it does not work at the end of the field
2nd: elevation can only take a number between 0 and 90
3rd: height can only take a number between 0 and 90.

if maestro is correct what is height & elevation?