Confidential information protection permits withholding materials, demands non confidential summaries, and allows disregard if confidentiality is unjustified. Rule 6 provides that information inherently confidential or supplied in confidence will be treated as confidential by the Director General and not disclosed without the supplier's authorisation; suppliers may be required to provide a non confidential summary or reasons why summarisation is impossible, and the Director General may disregard information whose confidentiality claim is unwarranted or whose supplier refuses disclosure unless independent sources verify its accuracy.