Repeating Group
Opens the Repeating group dialog to establish repeating units, SRU polymers or link nodes.
    
How to create a repeating group
    
        
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Select the Repeating Group tool then select the structure you would like to group.
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Then the repeating group dialog opens.
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Select the repetition pattern and set the repetition range you prefer, then click OK.
 
After the dialog closes, the repetition unit is established.