+=item needs-external-kernel
+
+The template MAY print C<yes> or C<1>. If it does so then after the
+guest has been built, L<virt-get-kernel(1)> is run to extract the
+kernel and initrd from the guest, and these are used to boot the guest
+with an external kernel and initrd (ie. using the libvirt
+C<E<lt>kernelE<gt>> and C<E<lt>initrdE<gt>> directives).
+