Creates a symmetry mapping template between deformers on an envelope. This is required if you want to mirror envelope weights
               symmetrically.
            
             To display: See Mirroring Envelope Weights Symmetrically [Character Animation].
            
             
               Object Symmetry Template Generation
               
 
               Controls the symmetry correspondence between deformer objects.
               
 
               
                  
                     
                        
                        
                     
                     
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                            | Automatically populates the template with mapping rules between deformers. Whether this option is on or off, you can always
                              add, change, and delete rules later.
                            | 
                     
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                            | The desired plane of symmetry:  (X = 0),  (Y = 0),  (Z = 0).
                            | 
                  
                 
             
             
               Geometry Symmetry Map Generation
               
 
               Controls the symmetry correspondence between points on the envelope.
               
 
               
                  
                     
                        
                        
                     
                     
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                            | Automatically creates a symmetry map for the points. Uncheck this option if your envelope already has a symmetry map that
                              you want to use for establishing the correspondence between points.
                            |