(1) Where the information requested is comprised in a document and there is good reason for withholding some of the information contained in that document, the other information in that document may be made available by making a copy of that document available with such deletions or alterations as are necessary.
(2) Where a copy of a document is made available under subsection (1), the department or Minister of the Crown or organisation shall, subject to section 10, give to the applicant—
(a) the reason for withholding the information; and
Section 17(2)(b): amended, on 1 April 1987, by section 4(2) of the Official Information Amendment Act 1987 (1987 No 8).