block any programme, based on the classification of the programme, or channel included in its service. 24. A subscription broadcasting service licensee must inform all its subscribers of the parental control mechanism available and provide the subscriber with a step-by-step guide on how to use it ("parental control guide"). 25. A subscription broadcasting service licensee must – 25.1 provide every subscriber a copy of the parental control guide when a subscriber subscribes to its subscription broadcasting service; 25.2 ensure that the parental control guide may always be accessed by its subscribers through the EPG; 25.3 post a copy of the parental control guide on its website; and 25.4 provide a call centre facility to assist subscribers in using the parental control mechanism. 26. In addition, a multi-channel subscription broadcasting service licensee must – 26.1 broadcast brief inserts across a variety of channels on the service from time to time informing subscribers of the parental control mechanism and how the parental control guide may be accessed; and 26.2 include the parental control guide on an information channel on the subscription broadcasting service which information channel must be accessible by subscribers at any time. 27. If a programme or channel has been blocked due to a subscriber's use of a parental control mechanism, the licensee must – 27.1 display a message on the subscriber's screen advising the subscriber that the content has been blocked by the parental control mechanism; and 27.2 enable the subscriber to unblock the programme or channel should the subscriber so wish. News and Comments on Matters of Public Importance 28. 28.1 If a subscription broadcasting service licensee includes in its service news or comment on matters of public importance that it has produced or commissioned, then the following provisions apply to that licensee – News