Brackets
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Checker searches for brackets. Brackets are usually associated with generic S-groups.
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Fixer offers removing brackets (removebrackets).
 
Example :
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         Brackets Checker (brackets)  | 
                
         Warning:  | 
                
         Fix  | 
        
| 
         Remove Brackets (removebrackets)  | 
        ||
| 
         Detect brackets  | 
                
               | 
                
               | 
        
Note: Checker does not detect brackets denoting polymers and mixtures. Graphical brackets (brackets not related to S-groups) are not detected.