How to Create a Sloped Wall in Revit

Hello

 

I found two tutorials in English on youtube:

http://www.youtube.com/watch?v=7tXBn_sxWME

http://www.youtube.com/watch?v=93WrSc_shm4

 

And a few pages in French:

http://3dho-revit.blogspot.fr/2008/12/les-murs-non-verticaux.html

http://augifr.ning.com/forum/topics/bonsoir