A linking book in Thuban follows much of the rules of its Amberworld equivalent, but the way the linking page (i.e. the first page) displays the target world is very particular.

Thick lines draw the world like an abstract symbol, pastel colours appearing like chalk but for the undulating motions they make along the parchment, enchantment describing the world not in letters but imagery, speaking of winds through thin air, of dark patches across the sun, of two safe havens, of origin, of traces of life, of desolation left behind by cataclysm, of weak shrubbery and trees. Ashernath feels fear crawl up his spine, mixing with childish delight and curiosity into a dangerous, burning longing. Their ravaged homeworld was a few inches away from them now - they just had to brush that shifting page and they would be there, brought into the heart of the Citadel of Life. Paralysed, Ashernath stares at the page, uncertain what to do… or say. It all seems unreal. The message, that visual description, continues its cycle obediently, enchanted ink following the instruction of whoever had once written the book. Tanith, potentially.