<p>
For strings, the "range" clause iterates over the Unicode code points
in the string. On successive iterations, the index variable will be the
-position of successive UTF-8-encoded code points in the string, and
+index of successive UTF-8-encoded code points in the string, and
the second variable, of type <code>int</code>, will be the value of
the corresponding code point. If the iteration encounters an invalid
UTF-8 sequence, the second variable will be <code>0xFFFD</code>,