The following preferences can be changed on the 
     General > Editors >
    Text Editors > Quick Diff preference page.
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            Option
           
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            Description
           
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            Default
           
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|---|---|---|
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            Enable quick diff 
         | 
        
           
            This option will enable or disable the quick diff option.
           
         | 
        
           
            On
           
         | 
      
| Show differences in overview ruler | 
        This option will show differences in the overview ruler. | Off | 
      
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            Colors - Changes 
         | 
        This option controls the color of changes. | |
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            Colors - Additions 
         | 
        
           
            This option controls the color of additions. 
         | 
        |
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            Colors - Deletions 
         | 
        
           
            This option controls the color of deletions. 
         | 
        |
| Use this reference source | 
        
          This option sets which reference to use as the base for generating quick diff comparisons. Options are:
          
  | 
        Version on Disk |