What do square brackets in class names mean?

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清酒与你 2020-12-02 06:41
I saw here square brackets that are used in class names:

      
      
        
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                (楼主)
            
              
              
                2020-12-02 07:17
              

            
            
                        
Nothing. Brackets are a legal character for class names with no special meaning whatsoever.
    
             
                                                        
            
            
              
                
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