> For the complete documentation index, see [llms.txt](https://doc.orbeon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.orbeon.com/xforms/core.md).

# Core

- [Attribute Value Templates (AVTs)](https://doc.orbeon.com/xforms/core/attribute-value-templates.md)
- [Binds](https://doc.orbeon.com/xforms/core/binds.md)
- [Validation](https://doc.orbeon.com/xforms/core/validation.md)
- [Variables](https://doc.orbeon.com/xforms/core/variables.md)
- [Keyboard focus](https://doc.orbeon.com/xforms/core/focus.md)
- [XForms JavaScript API](https://doc.orbeon.com/xforms/core/client-side-javascript-api.md)
- [Error handling](https://doc.orbeon.com/xforms/core/error-handling.md)
- [Detailed behavior](https://doc.orbeon.com/xforms/core/error-handling/error-handling-detailed-behavior.md)
- [Model-Bind variables](https://doc.orbeon.com/xforms/core/model-bind-variables.md)
- [XForms 2.0 support](https://doc.orbeon.com/xforms/core/xforms-2-0.md)