old_contents: var Zinc = { REVISION: '26' };
  
  
  Zinc.defaultMaterialColor = 0x7F1F1A;
  Zinc.defaultOpacity = 1.0;
  
new_contents: var Zinc = { REVISION: '27' };
  
  
  Zinc.defaultMaterialColor = 0x7F1F1A;
  Zinc.defaultOpacity = 1.0;
  
subject: Increment version number to 27.