(2) The 1[ Director General] shall provide for the maintenance of a special section of the register for the entry or filing in that section of such particulars as the Commission may direct, being-
(a) particulars containing information, the publication of which would, in the opinion of the Commission, be contrary to the public interest;
(b) particulars containing information as to any matter being information the publication of which, in the opinion of the Commission, would substantially damage the legate mate business interests of any person.