Markush Toolbar
This toolbar contains funtions that help to work with Markush structures and it is not visible by default.
To make it visible, choose View > Toolbars > Markush.    
|      | Position Variation Bond | Creates a variable point of attachment to represent a connection point to a group of atoms. | 
|      | Frequency Variation | Creates a Repeating Unit with Repetition Ranges. | 
|      | R-group attachment | Adds an attachment to the structure. | 
 
         
        