diff --git a/ch8/ch8-04.md b/ch8/ch8-04.md
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+## 8.4. Channels
+
+TODO
+
+{% include "./ch8-04-1.md" %}
+
+{% include "./ch8-04-2.md" %}
+
+{% include "./ch8-04-3.md" %}
+
+{% include "./ch8-04-4.md" %}