# Properties

- [Entities](https://studio.docs.ai.vonage.com/properties-1/entities.md)
- [System Entities List](https://studio.docs.ai.vonage.com/properties-1/entities/system-entities.md): List of Current System Entities
- [Intents](https://studio.docs.ai.vonage.com/properties-1/intents.md)
- [How do we analyze user input?](https://studio.docs.ai.vonage.com/properties-1/intents/the-meaning-of-nlu.md): Natural Language Understanding
- [Generate Training Data](https://studio.docs.ai.vonage.com/properties-1/intents/generate-training-data.md): Generate user expressions automatically
- [System Intents](https://studio.docs.ai.vonage.com/properties-1/intents/system-intents.md)
- [Intent Annotation](https://studio.docs.ai.vonage.com/properties-1/intents/intent-annotation.md): Marking entity values within a user expression
- [Parameters](https://studio.docs.ai.vonage.com/properties-1/parameters.md): Extract a part of the caller's input
- [Contacts](https://studio.docs.ai.vonage.com/properties-1/contacts.md)
- [Tags](https://studio.docs.ai.vonage.com/properties-1/tags.md)
- [Recordings](https://studio.docs.ai.vonage.com/properties-1/coming-soon-recordings.md)


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