> For the complete documentation index, see [llms.txt](https://ucsc-xena.gitbook.io/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ucsc-xena.gitbook.io/project/faq/basic-xena-browser.md). # Xena Browser ## Why can't I interact with the browser? I can see one column of data but I can't do anything. The Visual Spreadsheet wizard asks that you add at least TWO columns of data before interacting with the browser. This is because Xena was designed to allow you to find correlations within the data and you need more than one type of data on the screen to find a trend. Add another column of data and click Done. You can always delete this column after you have completed the wizard if it is not needed. ## Help! My gene is showing up as gray. In general, we recognize genes from the HUGO gene name space. If you gene name isn't recognized, try looking at Gene Card and see if other names listed there are recognized. --- # 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://ucsc-xena.gitbook.io/project/faq/basic-xena-browser.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.