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

# Advanced

- [Preset the Widget on a specific Department](https://developer.tiledesk.com/widget/advanced/preset-department.md)
- [Authentication Flow](https://developer.tiledesk.com/widget/advanced/auth-flow.md)
- [Widget protocol specs](https://developer.tiledesk.com/widget/advanced/widget-json-protocol.md)
- [Prechat Form JSON specs](https://developer.tiledesk.com/widget/advanced/prechat-form-json.md)
- [Prevent multiple conversations](https://developer.tiledesk.com/widget/advanced/singleconversation-mode.md)
- [Old versions](https://developer.tiledesk.com/widget/advanced/old-versions.md)
- [Web SDK v4](https://developer.tiledesk.com/widget/advanced/old-versions/web-sdk-v4.md)
- [Accessibility statement doc](https://developer.tiledesk.com/widget/advanced/tiledesk_widget_accessibility_statement.md)