Elevation Benchmark. The Elevation Benchmark tool is really useful for placing a benchmark on your elevations with the correct height on it. Then if you move the benchmark the height can be set to automatically update to the new elevation.
Section-Elevation Marker. The Section-Elevation marker is used to place the section or elevation line on your plans.
Reference Marker. The Reference Marker is used to place a detail reference, section reference or an elevation reference. Like the Drawing label the tool is scale-aware so regardless what the layer scale is the object always appears the same size.