The Items tab lists the items to be redefined:
        
                
                
                
                    
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                             Tool 
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                             Description 
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                                Add Group - Adds a group of elements to be redefined. 
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                                Add Attribute Group - Adds a group of attributes to be redefined. 
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                                Add Simple Type - Adds a simple type to be redefined. 
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                                Add Complex Type - Adds a complex type to be redefined. 
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