Wait whaaat? That’s really cool. One of my favourite games atm is “Into the dead: our darkest days”. It’s a survival rogue like, basically like this war of mine, but set in texas in the 80s with zombies. It’s fantastic, but too often when revisiting a scavenge site I forget which rooms I’ve gone in and what resources are available/I need to bring. I’ve wished they’d implement a “pen” feature for the map (like project zomboid), or spray paint you could bring to mark a door, for the entire time I’ve played it. But steam notes sounds like a fantastic solution, assuming they don’t implement something in game.