diff --git a/advanced/connectivity.rst b/advanced/connectivity.rst
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+Advanced Connectivity
+=====================
diff --git a/advanced/int.rst b/advanced/int.rst
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+In-band Network Telemetry (INT)
+===============================
diff --git a/advanced/qos.rst b/advanced/qos.rst
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+QoS and Slicing
+===============
diff --git a/advanced/upf.rst b/advanced/upf.rst
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+User Plane Function (UPF)
+=========================