This routine allows you to set spot elevations based on the surface you are working with and if any changes are made to the surface elevations, the spot elevation labels automatically update. All you do is select the surface you are working on and pick the spots you want to label. (Figure 2)
The image (Figure 3) below shows the same location, but the surface has been raised using the Raise/Lower Surface. (Figure 4)
So remember, if your design is going to change, and it will, remember to use the Spot Elevations routine so your labels will automatically update.