In this Act,
"document" , of an agency, means a document, other than a
document to which this Act does not apply, in the possession, or under the
control, of the agency whether brought into existence or received in the
agency, and includes—
(a) a document to which the agency is entitled to access; and
(b) a document in the possession, or under the control, of an officer of the agency in the officer’s official capacity.