Repeating functions
Repeating functions perform calculations on repeating fields.
| 
                                                         Function  | 
                                                    
                                                         Purpose  | 
                                                
| 
                                                         Allows a value in a non-repeating field to be used with every repetition in a repeating field.  | 
                                                |
| 
                                                         Returns the contents of the repeating field specified by a number.  | 
                                                |
| 
                                                         Returns the last valid, non-blank value in a field.  |