What is the effect of a "not for attribution" or "off record" clause in the California Civil Code of Civil Procedure?

This construction provides a broad scope of protection and readily discernable guidelines. We perceive it to be a reasonable and practicable construction harmonizing all portions of the statute. (See Hammarley v. Superior Court (1979) 89 Cal.App.3d 388, 396, 153 Cal.Rptr. 608.) This broad construction safeguards source materials and facts in memory that were obtained on a "not for attribution" or "off the record" basis. It also relieves trial courts of the tedious and dubiously useful task of sorting through source material to discover facts that have been otherwise disseminated and lifting such facts from the source material out of context.