Hober Mallow wrote:
Canon simply is; it's not something which must be declared by a higher authority.
when its delivered as a directive to the media tie-in licensees. When a higher authority tells
the licensee what can and can't be used to inform the product being created.
For a time, DC Comics had to publish a comic that was meant to only adapt concepts presented in ST:TMP (although numerous TOS elements crept in).
For a time, the novels and comics had to ignore TAS (and each other), and concentrate mainly on the canonical backgrounds of the main casts of TOS and TNG.