anchor.diff:  
   === Usage
   
  -Add a link:http://code.google.com/p/jmonkeyplatform-contributions/source/browse/trunk/ShaderBlow/src/com/shaderblow/filter/grayscale/GrayScaleFilter.java[GrayScaleFilter] instance to a FilterPostProccesor instance. Then add the FilterPostProccesor instance to Application's viewPort attribute.
  +Add a link:https://github.com/jMonkeyEngine-Contributions/shaderblowlib/blob/master/ShaderBlow/src/com/shaderblow/filter/grayscale/GrayScaleFilter.java[GrayScaleFilter] instance to a FilterPostProccesor instance. Then add the FilterPostProccesor instance to Application's viewPort attribute.
   
   [source,java]
   ----
  
positive.code: 
  ----
  
  link:http://code.google.com/p/jmonkeyplatform-contributions/source/browse/trunk/shaderblowlib/ShaderBlow/test-src/com/shaderblow/test/filter/oldfilm/TestOldFilm.java[TestCase]
  
  link:https://hub.jmonkeyengine.org/t/old-film-effect-filter/25464[Forum thread]
  
  
negative.code: 
  ----
  
  link:https://github.com/jMonkeyEngine-Contributions/shaderblowlib/blob/master/ShaderBlow/test-src/com/shaderblow/test/filter/color/TestColorScale.java[TestCase]
  
  link:https://hub.jmonkeyengine.org/t/colorscale-filter-added-to-shaderblow/23995[Forum thread]
  
  '''
  
  