meta-text
metatext

The reader participates in a meta-text that imitates the style of the school punishments, religious dogmas, and press releases, that is mixed in with the nascent writings of the teenager.

Obviously the author is unaware of all the possible texts that might emerge in such a work, but they have written the meta-text which controls the system. The author retains the right to be considered the author.

With my husband, I once actually sat down after the children went to bed and watched Charlie and Lola.We were quite drunk, admittedly; but also keen to try and work out some kind of meta-text concerning Lola’s invisible friend, Soren Lorenson.