In this Part privileged , visitor, caller or correspondent see section 98 ;proper grounds , for the refusal or termination of any visiting, telephone or correspondence rights of or in respect of a forensic patient, means that the exercise of the right (a) is or might be for an unlawful purpose; or(b) is or might be detrimental to the management, good order or security of the SMHU; or(c) is or might be harmful, distressing or offensive to the patient or another person; or(d) is or might be detrimental to the health or safety of the patient; or(e) is or might be interfering with the patient's treatment; or(f) is or might be inopportune because the patient is seriously or acutely unwell; or(g) should, having regard to any proper matter, not be allowed on account of some other compelling reason or risk;responsible official , for an SMHU, means its controlling authority, the Chief Psychiatrist or an authorised person at the SMHU;visitor , to an SMHU, includes (a) a person who is seeking to enter the SMHU as a visitor; and(b) a person who is completing a visit.