(a) Applicability. The rules in this part apply whenever:

(1) The Postal Service claims that any materials it provides to the Commission in connection with any proceeding or other purpose under title 39 of the U.S. Code, contain non-public information;

(2) Any person other than the Postal Service claims that any materials it provides to the Commission contain non-public information;

(3) The Commission is in the process of determining the appropriate degree of confidentiality to be accorded materials identified by any person to contain non-public information in accordance with these rules; or

(4) The Commission is in the process of determining how to ensure appropriate confidentiality for materials identified to contain non-public information that is furnished to any person in accordance with these rules.

(b) Scope. Information includes, but is not limited to, explanations, confirmations, factual descriptions, and data. Document refers to a hard copy or electronic conveyance of information and may be stored in any medium from which information can be obtained either directly or, if necessary, after translation into a reasonably usable form. Documents include, but are not limited to, writings, notes, graphs, charts, data files, emails, drawings, photographs, and images. Things include all matter, other than documents, that convey information. Documents and things shall collectively be referred to as materials.