Get Offline AS3 Documentation in CS5 « Summit Projects Flash Blog. With Flash CS4, Adobe moved away from the Help window and towards displaying online documentation in your browser.
There was the handy Connections window trick that let you access local (offline) documentation, which was speedier to use than the documentation at adobe.com. With CS5, all help is still online, but now it’s routed to the Adobe Help application, which, honestly, is even worse than opening online documentation in your browser. And it made it much harder to find local copies of the documentation. But there is a way! JSON. Projects.