> For the complete documentation index, see [llms.txt](https://help.sbtinstruments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sbtinstruments.com/software/access/components/page-navigation.md).
# Page navigation
The page navigation is visible on the left side of every page. It contains a list of links that you use to select the current page.
## Device status card
At the bottom of the page navigation, a *device status card* shows the status of your BactoBox®:
* Flow cell currently in your BactoBox®
* Connection from your computer to your BactoBox®
* Connection from your computer to SBT's cloud service (Nucleo)
* System information. E.g., device name, hardware version, and software version.
Usually, a status indicator is just a single icon. Sometimes, the status indicator also includes a short text. Some status indicators contain additional details. Hover your cursor over the status indicator to reveal the additional details in a tooltip.
### Flow cell
The text is *Remaining measurements* / *Max measurements* of the current [flow cell](/item-register/consumables/flow-cell.md). E.g., something like 241/250 if you used up 9 measurements already.
The tooltip also shows the flow cell ID.
**BactoBox® hides the flow cell status indicator when there is no flow cell installed.**
### Device connection
Lights up whenever Access communicates with your BactoBox® device. If this icon lights up regularly, this indicates that the connection works.
Device connection status indicator.
### Nucleo connection
Lights up whenever Access communicates with Nucleo (our cloud service). If this icon lights up regularly, this indicates that the connection works.
Nucleo connection status indicator.
### System info
The tooltip shows information about your BactoBox®:
* [Hostname](https://en.wikipedia.org/wiki/Hostname)
* Hardware version
* Software version
Press the :bars:Menu icon to show/hide the page navigation.
Press the :bars: *Menu* icon in the top left (inside the top bar) to show/hide the [page navigation](/software/access/components/page-navigation.md). This is useful on small displays because it gives more room for the page content itself.
---
# 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://help.sbtinstruments.com/software/access/components/page-navigation.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.