I haven't gotten very deep into creating things. (yet?) Poking around in the editors, and in the forum search, I did find a few things. Some brought up more questions, then answers.
I noticed, in the Environment Editor, the "Blue X", Object Type, is listed as, a "Projected Scenery Object". Clicking on this, yielded the following message: (Object type) The type of object. Different types of objects have different properties and behaviors.
I found this link:
http://www.knifeedge.com/KEmax/objects_tutorial.php#projected That may help.
One of the questions raised, was, why, after placing the "Blue X" on a (ground) runway, flying a 360 degree circle around it, I could only see the Blue X, through half the circuit . (0-180 yes)(180-360 no)
The Elevation (Z), of the Blue X, is not adjustable, as it has to be projected on a solid surface , apparently. (But from Where?
) It also, is supposed to conform, to terrain.
Note: I was able to adjust the elevation of the "Blue Dot Night", which is a "Static Scenery Object".
To place it on the roof of a hanger, I landed a helicopter on the roof, and noted the Altitude (AGL) In the NavGuide, to obtain the Z axis, for the Blue Dot. Note; The Blue Dot does Not conform to the roof. It will hover.