Every post now carries a small wedge just left of its comment icon, and it answers a question the timeline never could: is there more underneath? A dark wedge means the post has replies you aren't seeing — click it and they open right there, nested under the post, with everything else on screen staying put. Click again and they fold away. Each opened reply has its own wedge, so a deep conversation unfolds level by level, as far down as you care to go. A light wedge means don't bother clicking — nothing hidden. No spinning, no pointing down when open: the shade is the whole signal, an idea borrowed from outliners going back to Frontier, where it's worked without complaint for decades. If you've used Drummer, or the blogroll on scripting.com, your eye already knows how to read it.