autovivify the elements, and neither does slicing a shared array/hash
over non-existent indices/keys autovivify the elements.
-share() allows you to C<share $hashref->{key}> without giving any error
-message. But the C<$hashref->{key}> is B<not> shared, causing the error
+share() allows you to C<< share $hashref->{key} >> without giving any error
+message. But the C<< $hashref->{key} >> is B<not> shared, causing the error
"locking can only be used on shared values" to occur when you attempt to
-C<lock $hasref->{key}>.
+C<< lock $hasref->{key} >>.
=head1 AUTHOR