Maybe it's useful and you still don't know its purpose?
To quote the NEWS file:
As someone who had to explain where the chainlinks were several times, I find it useful...
To quote the NEWS file:
Quote:- Eye icon header added to the item tree views to make it more obvious whereto click for item visibility and links (backported from 2.99.10)
As someone who had to explain where the chainlinks were several times, I find it useful...