The consent given by an author should be in writing. The consent cannot be general or a broad ‘waiver’; it must specify the actions or omissions or the classes or types of acts or omissions that are being consented to. The consent must also relate to a specific work or works in existence at the time the consent is given, or a work or works of a particular description, the making of which has not begun or which are in the course of being made. These requirements are mandatory – the consent has no effect if they are not complied with.
