That such a simple thing can alleviate frustration and angst is humbling. It's also very useful. I can't count the number of times I've unthinkingly closed an open tab in my browser that was in fact a tab that I needed to have open. It's not always easy to trace your route back to that gem of information you stumbled upon after clicking a dozen or so links. Well, now it's a thing of the past. Don't waste time trying to find your way back. Right-click on another tab and select "Reopen closed tab". It's that simple.