=item Pluggable keywords
+The ticket for this feature is
+L<[perl #119455]|https://rt.perl.org/rt3/Ticket/Display.html?id=119455>.
+
See L<perlapi/PL_keyword_plugin> for the mechanism.
Introduced in: Perl 5.11.2
Using this feature triggers warnings in the category
C<experimental::lexical_subs>.
+The ticket for this feature is
+L<[perl #120085]|https://rt.perl.org/rt3/Ticket/Display.html?id=120085>.
+
=item Regular Expression Set Operations
Introduced in: Perl 5.18
Introduced in Perl 5.18
+=item Subroutine signatures
+
+Introduced in Perl 5.20.0
+
+Using this feature triggers warnings in the category
+C<experimental::signatures>.
+
+The ticket for this feature is
+L<[perl #121481]|https://rt.perl.org/Ticket/Display.html?id=121481>.
+
+=item Postfix dereference syntax
+
+Introduced in Perl 5.20.0
+
+Using this feature triggers warnings in the category
+C<experimental::postderef>.
+
+The ticket for this feature is
+L<[perl #120162]|https://rt.perl.org:443/rt3/Ticket/Display.html?id=120162>.
+
+=item Aliasing via reference
+
+Introduced in Perl 5.22.0
+
+Using this feature triggers warnings in the category
+C<experimental::refaliasing>.
+
+The ticket for this feature is
+L<[perl #122947]|https://rt.perl.org/rt3/Ticket/Display.html?id=122947>.
+
+See also: L<perlref/Assigning to References>
+
=item The <:win32> IO pseudolayer
The ticket for this feature is
=item Unicode in Perl on EBCDIC
-See also: L<perlre/"Special Backtracking Control Verbs">
-
=back
=head2 Accepted features
=back
+=head1 SEE ALSO
+
+For a complete list of features check L<feature>.
+
=head1 AUTHORS
brian d foy C<< <brian.d.foy@gmail.com> >>