See a Ruler type layout when Debugging in Safari

One day I may read some documentation on the Debugger…

I found this by pure chance when I missed clicked in the element debugger panel.

I click on a blank space left of the first tool icon button and hey presto a Rule appeared around the page.
You need to do it close to the button and not too far to the left. clicking again toggle it off.


Hmmmmmmmmmm, it’s like there is a hidden icon next to the Print Icon. Good find!

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