P: Mention Undo KBSC in Help

So I used to use Lightroom in the past and its a great piece of software, I took a break and returned editing and I could have sword there used to be a button at the top right like a curvy arrow forward and backwards as undo. I didnt see it so off I went to find it and could not figure it out so I used the question mark in a circle button at the top right and typed in the help search box, "undo" and only the full reset showed. So I think it could be benificial to new and future content creators to add the undo short cut key in that search section "CTRL+Z". Thank you for your time and hope I was able to contribute ❤️ 

-Daniel