diff --git a/docs/re/BACKLOG.md b/docs/re/BACKLOG.md
index 6581e036..e12a8c27 100644
--- a/docs/re/BACKLOG.md
+++ b/docs/re/BACKLOG.md
@@ -319,6 +319,14 @@ is what the autopilot needs in order to CHOOSE a target. One run in:
   ACROPOLIS or the craft is lost — and a scan needs the run to survive **two**
   counter transitions. `frozen.in_flight()` at least makes a dead run say so
   immediately instead of waiting out its window.
+* ✅ **What the counter's neighbourhood IS — the HUD glyph quads**
+  (2026-08-24). The four pointers that move with it lead to objects whose vtable
+  is `0x820B2A64`: **32 slots**, methods `0x823c43b0…0x823c45a0`, **three**
+  construction sites in `sylpheed.db`. Each instance is a **textured quad** — a
+  pixel size (34×42 for a digit) and four vertices of `(colour, u, v)` — and the
+  UV rectangle × **1280×768** reproduces that pixel size to a rounding step, so
+  the font atlas size is measured, not guessed.
+  See [`structures/hud-glyph-quad.md`](structures/hud-glyph-quad.md).
 * 🔴 **The counter is not "hostiles left" either.** It held at `012` for fifteen
   minutes of live flight while the ADAN population fell 132 → 93.
 * ✅ **But it decrements when the player kills**: `12 → 11` with 411 `fire=1`