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.