> For the complete documentation index, see [llms.txt](https://docs.bdb.ai/data-science-lab-5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bdb.ai/data-science-lab-5/data-science-notebook/.ipynb-file-cells.md).

# .ipynb File Cells

These cells contain explanatory text (Markdown), executable code,  and BDB Assist cells and their output. 

* Navigate to the Notebook tab for a repo sync project.
* Open a .ipynb file from the left side menu.
* The user can use the ***Add pre-cell*** icon to add a new code cell at the beginning of the .ipynb file.

<figure><img src="/files/9ovqa820Xjb4H35ifsth" alt=""><figcaption></figcaption></figure>

* You can add new cells by using the **+Code**, **+Markdown,** and **+Assist** options given at the bottom of the cell.

<figure><img src="/files/pfFlfOPKxooZyPDnvmg8" alt=""><figcaption></figcaption></figure>


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