STRING$ - string processing function that returns a string whose
          characters all have a given ASCII code or whose characters
          are all the first character of a string expression
 
Syntax
  STRING$(m,n)
  STRING$(m,stringexpression)
    - m, a numeric expression, is the length of the string to return
    - n, a numeric expression that has an integer value between 0 and 255,
      is the ASCII character code of the character that fills the string
    - stringexpression identifies a string whose first character can
      be used to fill the string
 
See Also  <ASCII CHARACTER CODES>