Map
This action assigns map numbers to atoms of a molecule or a reaction. Map numbers are assigned in a given order to each atom of the input structure.
Options in case of reaction file input:    
-     
Select the mapping style as Complete, Matching, or Changing.
 -     
Map action can also Mark bonds that have changed in the reaction.
 -     
Keep existing mapping (on by default)
 
Note : Reactions are mapped by the AutoMapper tool.
Example :
| 
         Action  | 
                
         Input  | 
                
         Output  | 
        
| 
         Map  | 
                
               | 
                
               | 
        
| 
         Map  | 
                
               | 
                
               |