Thread:Kola Pola/@comment-7326455-20140730205951/@comment-24145588-20140730224825

If you want to see experimental things like that, you can just open the page for editing, make your (temporary) changes, and hit the "preview" button. It'll show you how the finished page would look, without ever having to save the changes. Then you can just cancel out of the page.

And of course, the preview feature is very handy for changes that you do  want to keep, too.