Some more or less recent changes have been made on this site: - A tool to translate pages;

 The opportunity to join the site via Google APIs Friends. Initially, this will allow the dissemination of a newsletter. Then, using the Google API will open new services ...

 The ability to recommend the pages of this site via Facebook;

 The ability to share the pages of this site by email, print more easily (etc. ..) via the AddThis tool;

 Many pages (documents online weather RER in particular) have been reworked using Ajax technology to optimize the loading. Note that a special technique was used to help reconcile this Ajax navigation with bookmarks of the most common browsers;

 Finally, the ad has appeared on the site. Accommodation is in fact is not free and I had to try to resolve this source of funding .... which remain discrete (no invasive popup for example) but if you follow the links, will help finance the maintenance of this site ... Enjoy!