New Wings Help --> Browser Update
as you've probably already noticed, we've updated the help to a new HTML5 format since RX V2.2.
Since this format uses some new HTML 5 technologies you should consider an update of your browser to get the best experience.
Especially if you have some problems while opening the help, you should update your browser!
If you prefer to use the old help version or you don't have a browser on your device you can simply go back by just going into the "Wings options (Ctr+P)" --> "User Interface" and unchecking the "Use HTML5 format help" box.