=over

=item ${^UNICODE}
X<${^UNICODE}>

Reflects certain Unicode settings of Perl.  See
L<perlrun|perlrun/-C [numberE<sol>list]> documentation for the C<-C>
switch for more information about the possible values.

This variable is set during Perl startup and is thereafter read-only.

This variable was added in Perl v5.8.2.

=back