Codes of Practice: (1) Subject to subsections (8) and (9), for the purpose of providing practical guidance in respect of any requirements under this Ordinance imposed on data users, the Commissioner may— (a) approve and issue such codes of practice (whether prepared by him or not) as in his opinion are suitable for that purpose; and (b) approve such codes of practice issued or proposed to be issued otherwise than by him as in his opinion are suitable for that purpose.