There are a limited number of codes and the code name may not match the real-life type.
For example if the clutter code name is snow and you dont want snow, then you can rename it something else to better fit your clutter.
It is important to note the actual data contained for each category is what matters, no data is derived from the ‘name’ of the category.
For example, a desert and an ice plain could both have similar elevations, so that’s what they should be looking at in order to validate the data.
You can also create a different attenuation file if you want with to use your own clutter names, clutter heights and attenuation values.
Tip: look at the actual area, using bing or Google if necessary and compare the real world elevation to what is contained in the attenuation file.