=back
-=head2 Data::Dumper and references
+=head2 External references and transactions
-As of 1.0003, support for independent Perl datastructures was added (q.v. L</CIRCULAR REFERENCES>
-for more info). However, because DBM::Deep doesn't properly provide the same
-in-memory data-structure for a given location on disk, Data::Dumper (and
-friends) doesn't properly note this. This will be addressed in a future release.
+If you do C<my $x = $db-E<gt>{foo};>, then start a transaction, $x will be
+referencing the database from outside the transaction. A fix for this (and other
+issues with how external references into the database) is being looked into. This
+is the skipped set of tests in t/39_singletons.t and a related issue is the focus
+of t/37_delete_edge_cases.t
=head2 File corruption