anchor.diff:  *  If you have access to cube map textures, then use a SkyBox
   **  link:http://1.bp.blogspot.com/_uVsWqMqIGQU/SN0IZEE117I/AAAAAAAAAPs/4lfHx1Erdqg/s1600/skybox[SkyBox examples]
   
  -*  If you have access to sphere map textures – specially projected sky images that fit inside a sphere – then you use a SkySphere or SkyDome. 
  +*  If you have access to sphere map textures – specially projected sky images that fit inside a sphere – then you use a SkySphere or SkyDome.
   **  link:http://wiki.delphigl.com/index.php/Datei:Skysphere.jpg[SkySphere example]
   
  -For more information on Skymap creation see: 
  +For more information on Skymap creation see:
   
   *  <<jme3/advanced/free_skymaps#,How to create free skymaps>>
   *  <<jme3/external/blender.html#skybox-baking#,SkyBox baking>>
  
positive.code: 
  
  Here is an example for how you add a static horizon (a background landscape and a sky) to a scene.
  Having a discernable horizon with a suitable landscape (or space, or ocean, or whatever) in the background makes scenes look more realistic than just a single-colored “sky background.
  
  
  == Adding the Sky
  
negative.code: = How to add a Sky to your Scene
  :author:
  :revnumber:
  :revdate: 2016/03/17 20:48
  :relfileprefix: ../../
  :imagesdir: ../..
  