Infinity symbol in bookbinding to indicate that a book is printed on acid-free paper and will therefore be long-lasting. In modern mysticism, the infinity symbol has become identified with a variation of the ouroboros, an ancient image of a snake eating its own tail that has also come to symbolize the infinite, and the ouroboros is sometimes drawn in figure-eight form to reflect this identification, rather than in its more traditional circular form. In the works of Vladimir Nabokov, including "The Gift" and "Pale Fire", the figure-eight shape is used symbolically to refer to the Möbius strip and the infinite, for instance
The Sky Moves Sideways half the length of the one on the UK release. Additionally, the two parts of the title track on this version have been split into a number of sections. The album was remastered and re-released as a two disc collection in 2004, including expanded and demo material. The song "The Sky Moves Sideways (Alternate Version)" represents outtakes and a work-in-progress mix of the original vision of the album as a single 34-minute track. The version of "Moonloop" here has three minutes of additional material previously available only on an EP, and is split into two tracks. This is the only