# Core

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