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[caption id="attachment_1492" align="alignleft" width="300"] Original photo by Greg Lloyd 1969, used with permission.Photo of the Hypertext Editing System (HES) console in use at Brown University, circa October 1969. HES was developed by Prof Andries (Andy) van Dam, Ted Nelson, David Rice, Steve Carmody, Walter Gross, and others as an IBM sponsored research project. The HES software was distributed without charge by IBM and used by researchers and NASA. The photo shows HES on an IBM 2250 Mod 4 display station, including lightpen and programmed function keyboard, channel coupled to Brown's IBM 360 mainframe.CC BY 2.0[/caption]Appel à contribution / 4  H2PTM'2015 : Hypertextes, Hypermédias, Produits, Outils et Méthodes14, 15 et 16 octobre 2015, Paris- Calendrier -30 avril 2015 (repoussée à dimanche 10 mai 2015):Date limite de soumission (textes complets) pour évaluation. La plate-forme est ouverte, veuillez suivre le lien sur site de la conférence :http://h2ptm.univ-paris8.frPour plus d'informations concernant les thématiques, le calendrier, les instructions aux auteurs, etc., consulter le site Web de la conférence &#160;