do {...} block>. See the thread starting at
L<http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-09/msg00573.html>
+=head2 strict as warnings
+
+See L<http://markmail.org/message/vbrupaslr3bybmvk>, where Josua ben Jore
+writes: I've been of the opinion that everything strict.pm does ought to be
+able to considered just warnings that have been promoted to 'FATAL'.
+
=head2 lexicals used only once
This warns: