“What the rule precludes is the use of the document(s) disclosed. “Use” is a wide word. It extends to (a) use of the document itself eg by reading it, copying it, showing it to somebody else (such as the judge); and (b) use of the information contained in it. I would also regard “use” as extending to referring to the documents and any of the characteristics of the document, which include its provenance.”
“No doubt the implied obligation must yield to inconsistent statutory provisions and to the requirements of curial process in other litigation, eg discovery and inspection, but that circumstance is not a reason for denying the existence of the implied obligation.”