Can someone please explain to me what the following variables do in a little more detail?TERRAIN_ERROR_FACTOR=96.000000 This is a value from 0 to 100 that control the DEM radius (it is linear in area) TERRAIN_MIN_DEM_AREA=10.000000 This the lowest value used to calculate the DEM radius based upon the TERRAIN_ERROR_FACTOR TERRAIN_MAX_DEM_AREA=100.000000 This is the highest value used to calculate the DEM radius TERRAIN_MAX_VERTEX_LEVEL=19 This control the DEM resolution: 18 = 150m DEM, 19 = 75m DEM, 20 = 37m DEM, 21 = 19m DEM TERRAIN_EXTENDED_TEXTURES=1 This turns on/off the extended texture ring TERRAIN_DEFAULT_RADIUS= This is the default radius in textures for all rings, default is 2.5 TERRAIN_EXTENDED_RADIUS= This is the radius used for the inner ring when the extended texture ring is turned on, default is 4.0 TERRAIN_EXTENDED_LEVELS= This is the number of rings to add when using extended texture rings, default is 1 Do people set these variables manually or do you let FS9 set them by adjusting the sliders in the display menu? What would you set them to on a high end system?What is the DEM resolution of the Microsoft supplied terrain?One last question, what is the negative LOD setting used for?ThanksMichael

Bump.