Individual documents are numbered in writing in the order in which they were found in folders during archival description and digitisation processes.

The digital versions of the original physical documents are black and white faithful copies which are provided for research on their content. Where there is any doubt about the authenticity of a document, the original physical item must remain the ultimate primary reference source.

Digital copies of folders generally represent the full content of the original physical folders. In the case of documents containing still-sensitive content, the document is either excluded from the digital version or is redacted to obscure parts of the document. The principal reasons for removing or redacting documents are (i) they may violate the personal privacy, or may still pose a danger to the personal safety, of an individual or (ii) the author of the document does not wish it to be published online.

Duplicates of documents in one physical folder are retained in the digital copy if they contain some difference - such as unique annotations or drafting notes.

Some individual documents are found in several different folders in the original physical collection. This fact is preserved in the physical collection and in the digital copies.