diff --git a/4.2.3-uMatrix.md b/4.2.3-uMatrix.md
index c3477d4..eeb98f6 100644
--- a/4.2.3-uMatrix.md
+++ b/4.2.3-uMatrix.md
@@ -1,5 +1,18 @@
+:large_orange_diamond: **Block TLDs**
 
-**Prevent Internet sites from requesting LAN resources** ( thanks @theWalkingDuck )
+Example, blocking Cameroon (`.cm`)
+
+```
+* cm * block
+```
+
+For ABP-compatible syntax, this would be:
+
+```
+||cm^
+```
+
+:large_orange_diamond: **Prevent Internet sites from requesting LAN resources** ( thanks @theWalkingDuck )
 
 this is/was the only default ABE rule in Noscript:
 ```