The REVERSE function returns a character string whose length and characters are exactly the same as argument-1, except that
                  the characters are in reverse order. The type of this function depends on the argument type as follows: 
                  
 
            
             
               	 
                
                  	 
                  
                      
                        		   
                        		   
                        		  
                         
                           			 
                            
                              				
                              | Argument Type | Function Type | 
 
                           		  
                         
                        		  
                         
                           			 
                            
                              				
                              | Alphabetic | Alphanumeric | 
 
                           			 
                            
                              				
                              | Alphanumeric | Alphanumeric | 
 
                           			 
                            
                              				
                              | National | National | 
 
                           		  
                         
                        		
                     
                    
                  	 
                 
               
              
            
            
               General Format
 
               	  
               	  
 
               
              
            
            
               Arguments
 
               	  
                
                  	 
                  - Argument-1 must be class alphabetic, alphanumeric 
                     		
                      
                        		   or national or national
 and must be at least one character in length. 
                        		
                      
  
            
            
               Returned Values
 
               	  
                
                  	 
                  - If argument-1 is a character string of length n, the returned value is a character string of length n such that for 1 <j < n,
                     the character in position j of the returned value is the character from position n-j+1 of argument-1.