In the history of books, fold-out pages or page sequences in bound books have at first glance particularly been used for the purpose of reducing large-format illustrations to the format of a book—thus for practical rather than aesthetic or even playful reasons. This applies, for example, to maps, all kinds of complex schematic drawings, chronologies or panoramic-geographical representations. This article is dedicated to the use of folds in children's books from the nineteenth century to the present day, ranging from unfoldable illustrations in books, to pages unfolding out of books, to book objects dissolving through unfolding. The artistic approach to processes of unfolding not only allows for unconventional forms of narration; it can also be an occasion to question the conventionalised material form of the codex.

中文翻译：

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戏剧表演

在书籍的历史上，乍一看，折叠页或装订书籍中的页面序列特别用于将大幅面插图缩小为一本书的格式——因此是出于实用而不是美学甚至是俏皮的原因。例如，这适用于地图、各种复杂的示意图、年表或全景地理表示。本文致力于从 19 世纪到现在的儿童书籍中折叠的使用，范围从书籍中的可展开插图，到从书本中展开的页面，再到通过展开而溶解的书籍对象。展开过程的艺术方法不仅允许非常规的叙述形式；它也可以成为质疑法典传统材料形式的机会。