> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to use the Notebook Outline

## Question:

How to use the Notebook Outline?

How to close the Notebook Outline?

## Applies to:

* Notebook Outline

## Answer:

The Notebook Outline lets you view the blocks in your notebook from a high level and quickly select and navigate to them. The Outline lives in the left-hand sidebar that can be **expanded** and **collapsed** by selecting the icon at the top-left of the Notebook.

![The nTop user interface with the notebook outline open. The show/hide outline button is highlighted.](https://files.learn.ntop.com/help-articles/user-interface/49587433724051.png)

In addition to quickly navigating to blocks, the Outline provides a visual tracing for where variables are used in your notebook. When you select a block in the Outline, a bright blue highlight will appear on that block. If that block is a variable instanced within another block, a duller blue highlight will appear on the block that references it. In the below video, “Y Bound Lengths” is a variable being used within “Remapped Gyroid,” as indicated by the dull blue highlight.

![A gif showing how to use the notebook outline. An input is selected in the outline, and the block that contains the input is highlighted.](https://files.learn.ntop.com/help-articles/user-interface/49587433726995.png)## More on this topic:

* [How do I access block properties and info?](/help-articles/knowledge-base/user-interface/how-do-i-access-block-properties-and-info)
* [What is the Notebook, and how do I use blocks?](https://support.ntop.com/hc/en-us/articles/360048566433)
* [Why can't I see my block when it runs?](/help-articles/knowledge-base/implicit-modeling/why-can-t-i-see-my-block-when-it-runs)

## Keywords:

*how to notebook question close outline*