diff --git a/Assets/Scripts/ServerShared/DrawAhead.cs b/Assets/Scripts/ServerShared/DrawAhead.cs
index 159e51c44..8c25ac060 100644
--- a/Assets/Scripts/ServerShared/DrawAhead.cs
+++ b/Assets/Scripts/ServerShared/DrawAhead.cs
@@ -30,8 +30,8 @@ public static class DrawAhead
     public static float FloaterHeight(Zone zone, GameplaySettings settings, float2 planar, float lead) => Height(zone, planar, lead) + settings.FloaterLayerHeight;
 
     // A belt rock's drawn position (ruling asteroids-on-floater-layer): its planar pose at the drawn time, on the floater layer over the field.
-    // Ruling asteroid-tops-at-layer: the rock's top sits at the layer, so its centre is a drawn radius below it. pose.w is that radius:
-    // the renderer scales the unit rock mesh by it.
+    // Ruling asteroid-tops-at-layer: the rock's top sits at the layer, so its centre is a drawn radius below it. pose.w is that radius: ZoneRenderer scales the rock by
+    // Vector3.one * pose.w, and Zone.ChunkRadius is the same number.
     public static float ChunkHeight(Zone zone, GameplaySettings settings, float4 pose, float lead) => FloaterHeight(zone, settings, pose.xy, lead) - pose.w;
 
     public static float3 Chunk(Zone zone, GameplaySettings settings, ChunkId chunk, float lead)