# Page Not Found

The URL `selection/elementgroupnode` does not exist.

You might be looking for one of these pages:
- [Style definition blocks](https://developers.felt.com/felt-style-language/style-definition-blocks.md)
- [Legends](https://developers.felt.com/felt-style-language/legends.md)
- [Layer Uploads](https://developers.felt.com/rest-api/api-reference/layers/layer-uploads.md)
- [Authentication](https://developers.felt.com/rest-api/authentication.md)
- [Elements](https://developers.felt.com/rest-api/api-reference/elements.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://developers.felt.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://developers.felt.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/felt-style-language/style-definition-blocks.md`)
- Use `Accept: text/markdown` header for content negotiation