Design by Marc Autret with a text by Marie Lebert. From Project Gutenberg in 1971 to the Encyclopedia of Life in 2007, 38 milestones and as many pages, with an overview and an in-depth description for each milestone. Marc Autret, a developer and graphic designer, created this experimental interactive PDF with a "reading experience" on three levels. As the links within the PDF will not work in a browser, it is recommended to download the PDF first (in the Download Options on the right), and to open it with Adobe Acrobat Reader then. This PDF is a work of art, and copyrighted.