The limitations then apply in the following four situations, each subject to further specific conditions that determine whether, and which, remedies may not be imposed.8)_and_footnotes(n144);.vk n144 Note that the references to ''notification'' in the last two of the following situations--''user postings'' and ''links, indices, etc.,''--are elaborated in provisions that, as explained more fully below, set out a new scheme of ''notice and take down'' remedies for copyright owners.8)_and_footnotes(n145);.vk n145 Section 512 includes provisions to put-back material once taken down via a ''counter notification'' as well as penalties for a ''false notification.''8)_and_footnotes(n146);.vk n146 The adequacy of notices, and treatment of alleged misrepresentations in such notices, have been the subject of litigation.8)_and_footnotes(n147);.vk n147