Hide/Show all code with one click of an 'eye' toggle?

Is there a way to select all the ‘eye’ toggles to show/hide all code with one click?
I usually have to go through each cell and unhide code after printing a report without code.

It’s time consuming to show/hide them one at a time when bouncing between a preview for a report and working with the code. Thanks!

[I posted this on Fons’ Github page too.]

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