Warning: This is a documentation for the future version 2.0 of the Ocsigen framework. It is very preliminary for now. Some links are broken, some examples are broken (as the syntax is currently evolving a little), and some parts are missing. But it is a good overview of the new features.
Version 2.0 will be released probably during the first semester of 2011. In the meantime, the stable branch is 1.3. A tutorial for that version can be found in Eliom's documentation.