=over =item ${^TAINT} X<${^TAINT}> Reflects if taint mode is on or off. 1 for on (the program was run with B<-T>), 0 for off, -1 when only taint warnings are enabled (i.e. with B<-t> or B<-TU>). Note: if your perl was built without taint support (see L), then C<${^TAINT}> will always be 0, even if the program was run with B<-T>). This variable is read-only. This variable was added in Perl v5.8.0. =back