• Need additional primary and secondary authority for your research.
  
  
• know about negative (distinguishing) citing references (it's always best to know the opposition).
• find positive citing references (do later cases agree with the analysis in your case?)
• find helpful explanatory citing references (e.g., ALR article, treatise chapter, state encyclopedia discussion, law review article, etc.)
  
  
• Verify that your case is still good law
  
  
• Check the direct history for prior and subsequent history (was it reversed on appeal?)
• Check the indirect/citing references for subsequent negative treatment (was is overruled in a subsequent decision?)
  
  
• See if your statute has any pending legislative changes.

REMEMBER: You can't rely on the graphical symbols:  

• A case may have a Negative symbol for a legal issue not relevant to your research; 
• The different services may have different symbols;
• A service may even have an incorrect symbol
• You must read the case

 .