designating a Unicode character, or C<U+> followed by hexadecimals
designating a Unicode character. In other words, if you want a code
point to be interpreted as a hexadecimal number, you must prefix it
-with either C<0x> or C<U+>, becauseq a string like e.g. C<123> will
+with either C<0x> or C<U+>, because a string like e.g. C<123> will
be interpreted as a decimal code point. Also note that Unicode is
B<not> limited to 16 bits (the number of Unicode characters is
open-ended, in theory unlimited): you may have more than 4 hexdigits.