AsciiAdd()

         Adds or subtracts all elements of a string

    Syntax:

         AsciiAdd( cString, nAdds ) -> cNewString

         cString : The string to manipulate
         nAdds   : The number to add

    Description:

         Adds or subtracts all elements of a string and returns the
         new string.

    Return:

         The new string.

    Example:

         ? AsciiAdd( "0123456789", 1 )      //  "123456789:"
         ? AsciiAdd( "0123456789", -1 )     //  "/012345678"