Content Comparison

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1. On the Menu bar, click "Safari" > "Preferences"
   
2. Once the small window appears, click on the "Websites" tab. 
3. Click on "Pop-up Windows" and make sure that it is set to "Block" or "Block and Notify"
   

Private Browsing

1. On the Menu bar, Click "File" 
   1. Then click on "New Private Window"
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