=== HGT chop ===
This will convert the .hgt.zip files you have downloaded earlier on and converts them into a form that TerraGear can read. Simply select the directory in which you
unpacked the elevation downloads. Make sure you do set the correct resolution! For the USA this can be 1 arcsec, while the rest of the world is provided in 3 arcsec resolution.
=== Genapts ===