How the physical book looks in Real Life. Most editions have the cover being just slightly too narrow to fully cover the pages. In other words, the book is bigger on the inside.
Due to Johnny spilling ink on some 40 pages of Zampano's manuscript and being forced to omit them, the complete book would be longer than the one you are reading.
When Navidson reads House of Leaves at the end, he says that the book is 736 pages long. The hardcover in Real Life is only 709 pages. But Navidson has already read 26 pages; take that as you will. Then again, the total page count (of the paperback full-colour edition anyway) is 736, when one includes a page of reviews, the title page, the copyright information, the Contents page, the Foreword, Johnny's Introduction and the other side of the "Yggdrasil" poem.
Over-filled and spilling things are a theme through the book. E.g. Navy putting too much coffee on his cup. The coffee is a clever allusion to the problem he is facing at that point in the book: the fact that his house appears to be bigger than its exterior. Navidson fills the coffee all the way to the very top, where surface tension allows the level of liquid to rise ever so slightly above the edge of the cup. Like the house, the coffee takes up more volume than its container suggests.
On top of that, much of the story is told within the footnotes by Johnny. At many points these footnotes will go on for paragraphs and pages, taking up more space than the text above it which it originally referred to. Another instance of things being bigger on the inside.
Tom: At least when you're drunk, you've always got the floor for your best friend. Know why?
Navy: It's always there for you.
At one point, the editors mention that they are not sure who originally put in the bizzare formatting. It is very similar to the formatting Johnny's mother's letters had, which suggests it was Johnny that put in that formatting.
The text-formatting shows the mental state of the main characters of each chapter. In a chapter comparing Will and Tom Navidson to Jacob and Esau, the text is arranged into two columns per page (regarding two pairs of brothers); in Holloway's Exploration #4, footnotes containing long and meaningless lists gradually take up more and more of the pages, going along with Holloway's growing insanity and claustrophobia; in Navidson's explorations of the labyrinth the text is arranged into a few lines per page with the rest blank, giving a sense of openness, purpose, and clarity. The text even reflects events in the book - such as during the final exploration when the ceiling rises, the text does so, and vice versa.
At the books close, Navidson begins to burn a book so he has light to read by, reducing it to one page. Once he finishes, the house around him vanishes, leaving him plummeting into the dark. What book did he just burn? The House of Leaves.
The untitled poem by Zampano suggests "...this great blue world of ours, seems a house of leaves, moments before the wind." Our great blue world, seems a house... is the house in blue a reference to our world made based on this poem?
I read that and immediately thought about the dimensions of a picture, until I saw the bue.
Also, some newer versions of the book include a page of The Navidson Comic in the appendix. If Zampàno is blind and The Navidson Record doesn't really exist, who drew that page?
EXACTLY. That chapter is entitled "contrary evidence" and it's filled with evidence that it does in fact exist.
In the part where Tom and Navidson are compared to Jacob and Esau, Zampano complains about Jacob decieving his blind father. He remarks that, in Deutronomy, it is written that Cursed is anyone who leads the blind astray on the road.. The Fridge Logic kicks in when one realises that the Jewish laws weren't written yet when Jacob and Esau where around.