Returns a string of a specified length made up of a repeating character.
 
STRING$(length%,{ascii-code% | stringexpression$})
 
    - length%              The length of the string.
    - ascii-code%          The ASCII code of the repeating character.
    - stringexpression$    Any string expression. STRING$ fills the string
                           with the first character in stringexpression$.
 
Example:
    PRINT STRING$(5, "-");
    PRINT "Hello";
    PRINT STRING$(5, "-")
 
See Also    <ASCII CHARACTER CODES>