"We designed the New York Public Library's first iPad app: Biblion—The Boundless Library to echo the serendipity found by searching through the treasures on the library's shelves. Walking through 'the stacks' at the NYPL, visitors encounter stories of various sizes, from short pamphlets, to long novels. Each book has an inherent look and shape that informs your choice to engage with it. We take inspiration from these forms and each story, essay or image gallery in Biblion mirrors a physical stack of documents, hanging in mid-air as a 3-D information landscape. Typically, apps offer the same features in both portrait and landscape orientations. In Biblion, landscape mode serves as an image viewer, allowing visitors to navigate easily through full-screen photographs and documents. Portrait mode is optimized for reading, enabling users to scroll through stories, essays and galleries."