HDE v2.1 (high definition environment) photo-realistic HD texture package that will improve the appearance of your clouds (cumulus, stratus, cirrus), sky color and ground details.
By Original author Pablo Diaz, FSX update by Danny Glover and Erik BENDER (Rikoooo)
If you have FSX SP2 or Acceleration installed, you may have solid windows when in the virtual cockpit when it is raining with many addon aircraft. This update repairs FSX so that you can have transparent windows again.
This is a modification of roads and highways of Flight Simulator X or Prepar3D, this add-on will replace your textures by new enhanced textures high definition
Here is a modification of parking textures in high definition, it adds spots of oil and gasoline on the floor and generally makes the airport ground more realistic.