Landmarks

I think we should have a tab at the bottom or top of our screen where we can add a land mark, pressing the L key. where you would need to have coordinates on to add it, But it would be very useful so players wouldn't always have to write down the coordinates. instead, press L and you will have the option to navigate to your desired destination (that you've already set and titled as your own from when you were there to begin with)
For example, I was in a forest biome and found a mansion. Well, i might loose the coordinates if I wrote them down, but thank fully I have landmarks, I place down a landmark, and title it. so now, when I'm say 400 blocks away, I can press L, I can press my desired land mark, and it will guide me back to the mansion after I collect all my materials to defeat the monsters inside. Or maybe I built a base, I would want to keep track of that when i decide to travel or go in caves.