The Ecole des chartes is happy to introduce you to the new chapter of the online Cartulaire blanc of the French abbey of Saint-Denis (http://elec.enc.sorbonne.fr/cartulaireblanc/) : Rueil-Malmaison (http://elec.enc.sorbonne.fr/cartulaireblanc/rueil/). The Web site has been technically and graphically upgraded. The Cartulaire blanc of Saint-Denis is the most important cartulary of the abbey of Saint-Denis. It contains about 2600 transcriptions of charters, compiled between 1270 and 1300. The electronic edition grant easy access to this large collection of sources, published online chapter after chapter as the work is done by the Ecole des chartes' students under the direction of Olivier Guyotjeannin, professor of diplomatic. Each page of the site is dynamically generated from XML files using the TEI DTD (eg. : http://elec.enc.sorbonne.fr/xml/cartulaire.xml). The navigation has been improved to allow a faster access to contents. The interface has been adapted to fit to the graphic charter of the Ecole des chartes' Websites and has been optimized to ease reading and exploitation of informations. For further informations, see Technical Principles (http://elec.enc.sorbonne.fr/cartulaireblanc/introgenerale3/#partie4) and Encoding Guidelines (http://elec.enc.sorbonne.fr/cartulaireblanc/guidebalisage/) (only french versions available). For any request, please contact us. Gautier Poupeau, Electronic publisher in Ecole des chartes, http://www.enc.sorbonne.fr