anchor.diff:    }
   
     /**
  -  * @hint functions like header(), except it adds the header to the CURRENT personalization envelope. You can set a header by providing the header and value, or by passing in a struct.
  +  * @hint functions like header(), except it adds the header to the **current** personalization envelope. You can set a header by providing the header and value, or by passing in a struct.
     * @header Facilitates two means of setting a header. You can pass in a struct with a key/value pair for the name and value of the header. Alternatively, you can use this to pass in the name of the header, and provide the value as a second argument.
     */
     public any function withHeader( any header, any value ) {
  
positive.code:   }
  
    /**
    * @hint adds a substitution ( "substitution_tag":"value to substitute" ) to the CURRENT personalization envelope. You can add a substitution by providing the tag and value to substitute, or by passing in a struct.
    * @substitution Facilitates two means of adding a substitution. You can pass in a struct with a tag/value for the substitution tag and value to substitute. Alternatively, you can use this argument to pass in the substitution tag, and provide the replacement value as a second argument.
    */
    public any function withSubstitution( any substitution, any value ) {
  
negative.code:   }
  
    /**
    * @hint Adds an additional 'to' recipient to the **current** personalization envelope
    */
    public any function addTo( required any email ) {
      var count = countPersonalizations();
  