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+## wsrep API usage examples
+
+### 1. Listener
+Is a simple program that connects and listens to replication events in
+an existing cluster.
+
+Usage example (starting listener on the same host as the rest of the cluster):
+```
+$ ./listener /path_to/libgalera_smm.so gcomm://localhost:4567?gmcast.listen_addr=tcp://127.0.0.1:9999 cluster_name
+```
+
+### 2. Node
+Is a more complex program which implements most of wsrep node functionality
+and can form clusters in itself.