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@@ -56,6 +56,8 @@ except schematic.core.ApiError as e: # Handle all errors
 
 ## Usage examples
 
+A number of these examples use `keys` to identify companies and users. Learn more about keys [here](https://docs.schematichq.com/developer_resources/key_management).
+
 ### Sending identify events
 
 Create or update users and companies using identify events.