Working with elevations in design files can sometimes be somewhat confusing.  It is sometimes unclear whether you are working with the clipping planes, active z, or display depth, and then it is not always clear whether the elevation should be expressed in design file units, or UOR's, or real-world units before it is adjusted for global origin and working units. This MDL application changes the the elevation of all displayed linear elements to a user-specified elevation.  The elevation should be specified in real-world units.