> For the complete documentation index, see [llms.txt](https://www.xrdev.app/mixed-reality-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.xrdev.app/mixed-reality-docs/lessons/lesson-7/concepts/what-is-anchor-relationships-and-what-is-it-useful-for.md). # What is Anchor Relationships and what is it useful for? By using anchor relationships, you can create connected anchors in a space and then ask questions like these: * Are there anchors nearby? * How far away are they? **You could use connected anchors in cases like these:** * A worker needs to complete a task that involves visiting various locations in **an industrial factory**. The factory has spatial anchors at each location. A HoloLens or mobile app helps guide the worker from one location to the next. The app first asks for the nearby spatial anchors; it then guides the worker to the next location. The app visually shows the general direction and distance to the next location. * **A museum** creates spatial anchors at public displays. Together, these anchors form a one-hour tour of the museum's essential public displays. At a public display, visitors can open the museum's mixed reality app on their mobile device. Then, they point their phone camera around the space to see the general direction and distance to the other public displays on the tour. As a user walks toward a public display, the app updates the general direction and distance to help guide the user. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://www.xrdev.app/mixed-reality-docs/lessons/lesson-7/concepts/what-is-anchor-relationships-and-what-is-it-useful-for.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.