There is an issue with displaying the Storyboard 4 documentation in HTML 5 format on Mac Mountain Lion (10.8) with Safari 6.0. The shell is blank. To work around this, the Local File Restrictions option must be disabled.
For more information on Safari 6.0, see http://support.apple.com/kb/ht5364
Web developers note: Web content based on your local drive may not render in Safari with the default security setting of "Local File Restrictions".
To disable Local File Restrictions:
Mac OS X v10.8