“Generally speaking, any part of a document may be sealed up or otherwise concealed under the same conditions as a whole document may be withheld from production; the party's oath for this purpose is as valid in the one case as in the other. The practice is either to schedule to the affidavit of documents those parts only which are relevant, or to schedule the whole document and to seal up those parts which are sworn to be irrelevant; …”” “Generally speaking, any part of a document may be sealed up or otherwise concealed under the same conditions as a whole document may be withheld from production; the party's oath for this purpose is as valid in the one case as in the other. The practice is either to schedule to the affidavit of documents those parts only which are relevant, or to schedule the whole document and to seal up those parts which are sworn to be irrelevant; …””