=over

=item ${^UTF8LOCALE}
X<${^UTF8LOCALE}>

This variable indicates whether a UTF-8 locale was detected by perl at
startup.  This information is used by perl when it's in
adjust-utf8ness-to-locale mode (as when run with the C<-CL> command-line
switch); see L<perlrun|perlrun/-C [numberE<sol>list]> for more info on
this.

This variable was added in Perl v5.8.8.

=back