You can add supplementary text to spot dimensions. By editing the type parameters for the spot elevation, you can add text for the elevation indicator, top indicator, and bottom indicator. This text can appear as a suffix or a prefix to the spot elevation value.
In addition, you can edit the instance parameters for a spot elevation to add supplementary prefix and/or suffix text to the single (or upper) value and the lower value.
Order of appearance for text relative to the spot elevation value:
For more information, see Spot Elevation Type Properties and Spot Elevation Instance Properties.