"background feature" it is a way of displaying an image file in the background while you are drawing in the foreground. The image does not appear in the 3d view just the 2d view. I use it while I'm working on a structure. You could also use it to import a track plan from some other track planning software by tracing over it. Russ
Structure sample:
An imported track plan re-sized to match Scarm grid and placed in background:
