ASCIIToString (vec)
Convert a vector of ASCII values to a string.
		  See also
		  StringToASCII.
          
Example:
genius>ASCIIToString([97,98,99])= "abc"
See Wikipedia for more information.
AlphabetToString (vec,alphabet)
Convert a vector of 0-based alphabet values (positions in the alphabet string) to a string.  A null vector results in an empty string.
		  See also
		  StringToAlphabet.
          
Examples:
genius>AlphabetToString([1,2,3,0,0],"abcd")= "bcdaa"genius>AlphabetToString(null,"abcd")= ""
StringToASCII (str)
Convert a string to a (row) vector of ASCII values.
		  See also
		  ASCIIToString.
          
Example:
genius>StringToASCII("abc")= [97, 98, 99]
See Wikipedia for more information.
StringToAlphabet (str,alphabet)
Convert a string to a (row) vector of 0-based alphabet values
		  (positions in the alphabet string), -1's for unknown letters.
		  An empty string results in a null.
		  See also
		  AlphabetToString.
          
Examples:
genius>StringToAlphabet("cca","abcd")= [2, 2, 0]genius>StringToAlphabet("ccag","abcd")= [2, 2, 0, -1]