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- [Basic Nodes](https://docs.cognigy.com/ai/agents/develop/node-reference/basic/overview)  
- [Question](https://docs.cognigy.com/ai/agents/develop/node-reference/basic/question#description)  
- [Optional Question](https://docs.cognigy.com/ai/agents/develop/node-reference/basic/optional-question#basic-settings)