Few model railway layouts are entirely on the same level. Fortunately, AnyRail can handle track at varying heights.

 

If you want to make sure that the height of a certain point is not changed accidentally, right-click it, and select Lock height.

The point turns blue to indicate that its height is locked:

Page url: http://www.anyrail.com/help_en/index.html?workingwithheight.htm