=over =item $DEBUGGING =item $^D X<$^D> X<$DEBUGGING> The current value of the debugging flags. May be read or set. Like its LI>, you can use numeric or symbolic values, e.g. C<$^D = 10> or C<$^D = "st">. See LI>. The contents of this variable also affects the debugger operation. See L. Mnemonic: value of B<-D> switch. =back