sequence. Therefore, it cannot be used inside a bracketed character
class. Details are discussed in L<perlrebackslash>.
-C<\h>, C<\H>, C<\v>, C<\V>, and C<\R> are new in perl 5.10.
+C<\h>, C<\H>, C<\v>, C<\V>, and C<\R> are new in perl 5.10.0.
Note that unlike C<\s>, C<\d> and C<\w>, C<\h> and C<\v> always match
the same characters, regardless whether the source string is in UTF-8
Perl will recognize the POSIX character classes C<[=class=]>, and
C<[.class.]>, but does not (yet?) support this construct. Use of
-such a constructs will lead to an error.
+such a construct will lead to an error.
=head4 Examples