> For the complete documentation index, see [llms.txt](https://docs.bdb.ai/bdb-documentation/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/bdb-documentation/data-science-lab/various-tabs-to-work-with/notebook/notebook-page/notebook-cells/using-a-code-cell.md).
# Using a Code Cell
{% hint style="success" %}
*Check out the given walk-through on how to use a Code Cell under a Notebook.*
{% endhint %}
You can write and execute code using the Notebook interface. This section covers the steps to write and run a sample code in the Code cell of the BDB DSL Notebook.
* Navigate to a Notebook.
* A cell to write and execute code opens under the selected Notebook.
* Write code inside the cell.
* Click the ***Run cell*** icon to run the code.
* The Run cell button gets changed into the Interrupt cell icon while running the code.
* Another code cell gets added below (as shown in the following image).
* Once the code is run successfully a checkmark appears below the Run cell icon.
* The number before a cell indicates the count of the input executions for the notebook.
* Click the Save icon provided for the Notebook.
* The Notebook gets saved with the new update.
* A notification message appears to indicate the completion of the action.
{% hint style="info" %} Please Note:
* *The **+Code** and **+Markdown** options provided at the bottom of a cell inserts a new cell after the given code/ Markdown cell.*
* *While the **Code** and **Markdown** options provided under the **Code** section of the Task Bar adds a new cell before the given code/Markdown cell.*
{% endhint %}
---
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