collapse all notebooks

hansleroy 

To specify the usecase:

On the left section, all my notebooks are diplayed. 

Is there a way to collapse all notebooks at once - e.g. by a command, keyboard-shortcut or whatever?

Instead of having to collapse each notebook separately by clicking on the arrow? 

Desired result:

I found an answer to this dated 2010 ,saying "However, we cannot collapse all the sections under diffrent notebooks at the same time"

https://social.technet.microsoft.com/Forums/ie/en-US/f41ce919-ead7-4760-b052-a54895778924/onenote-2010-anyway-to-collapse-everything-section-groupsall-notebooks8?forum=officeitproprevious

My hope was that this has improved meanwhile, since there have been several  requests and it would really save a lot of time. 

Would be great to learn if this is now possible or (still) not.

Kind regards

Constanze

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