 The law changes over time so when you find a case you may need to find out how your case is being used today. You need to see if your case is still being used as an authority or has the case been overruled by another case. You can find out how your case has been cited by noting up. Noting up is checking to see how your case has been cited by other cases. For example, has your case been treated positively? Has it been applied, approved or affirmed? As cautionary? Whether the case has been questioned, distinguished or explained? Nutrally? This is where there are no other citing cases or where the citations have no direct or negative history? Or has it been treated negatively? Where a case has been reversed, varied, not followed, disapproved or overruled on at least one point of law? You can use searching tools called case citators to tell you how your case has been used. You can find a list of case citators on the law guide. To use these tools, search for your case, open and then use the note up features. Noting up can be slightly different in each database. From the list of citing cases, you will see how your case has been used. Many databases also use a flag system to tell you how the case has been treated. Using case citators are a great starting place, but often you will need to read a case to find out more detail about why your case has been cited. You can use secondary sources like journal articles and legal encyclopedia entries to help you find out more background information on the case, including changes to legislation. If you need help noting up a case, ask us at the library.