diff --git a/web/canvas.ts b/web/canvas.ts
index f5ec30d..4438e63 100644
--- a/web/canvas.ts
+++ b/web/canvas.ts
@@ -68,6 +68,8 @@ export type CanvasComponent = {
 export type CanvasSection = {
   id: number;
   name: string;
+  /** Whether the page draws a rule beneath this band. */
+  divider?: boolean;
   /** The heading the page draws above the band, or null. Not `name` — see the site's schema. */
   title?: string | null;
   layout: 'one' | 'two';
diff --git a/web/sections/BandSettings.tsx b/web/sections/BandSettings.tsx
index 0777866..55f297f 100644
--- a/web/sections/BandSettings.tsx
+++ b/web/sections/BandSettings.tsx
@@ -26,7 +26,7 @@ export const BandSettings = ({
   blocks,
 }: {
   pageId: number;
-  band: { id: number; name: string; title?: string | null };
+  band: { id: number; name: string; title?: string | null; divider?: boolean };
   /** The builder re-reads its sections: the nav's row is this name, and the page draws this title. */
   onSaved: () => void;
   /** This band's blocks — `BandBlocks`, built by the panel that has the handlers. */
@@ -37,6 +37,7 @@ export const BandSettings = ({
   clientRef.current = client;
 
   const [draft, setDraft] = useState({ name: band.name, title: band.title ?? '' });
+  const [busyDivider, setBusyDivider] = useState(false);
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [saved, flashSaved] = useFlash();
@@ -93,6 +94,33 @@ export const BandSettings = ({
         />
       </div>
 
+      {/*
+        Written on its own rather than through the draft, because it is a switch: there is nothing to
+        debounce and waiting 600ms to see a line disappear reads as the control not working.
+
+        Phrased as what it DOES — a rule under this band — rather than as `divider`, which is the column
+        name and tells somebody nothing about what they will see.
+      */}
+      <label className="flex cursor-pointer items-center gap-2 text-xs">
+        <input
+          type="checkbox"
+          className="size-3.5 accent-primary"
+          checked={band.divider !== false}
+          disabled={busyDivider}
+          onChange={async (event) => {
+            const next = event.currentTarget.checked;
+            setBusyDivider(true);
+            try {
+              await client.patch(`/fofos-admin/pages/${pageId}/sections/${band.id}`, { divider: next });
+              onSaved();
+            } finally {
+              setBusyDivider(false);
+            }
+          }}
+        />
+        A rule beneath this band
+      </label>
+
       {saved && <p className="text-xs text-success">Saved</p>}
       {error && <p className="text-xs text-destructive">{error}</p>}