DELET
Returns a string obtained by deleting a specified number of characters from a
      string.
    Syntax
DELET(String, StartLocation, N)
String is the string from which to
        delete characters. StartLocation is the location in the
        string from which to start deleting characters (1 being the first character in the string).
          N is the number of characters to delete.
Examples
This example returns 'Aa':
DELET('Alea', 2, 2)
This example returns 'A':
DELET('IACTA', 1, 4)