> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/build/code-in-n8n/use-built-in-shortcuts.md).

# Use built-in shortcuts

n8n provides built-in methods and variables for working with data and accessing n8n data. This section provides a reference of available methods and variables for use in expressions[^1], with a short description.

{% hint style="info" %}
**Availability in the expressions editor and the Code node**

Some methods and variables aren't available in the Code node. These aren't in the documentation.

All data transformation functions are only available in the expressions editor.
{% endhint %}

The [Cookbook](/build/code-in-n8n.md) contains examples for some common tasks, including some [Code node only](/build/code-in-n8n/cookbook/code-node.md) functions.

[^1]: In n8n, expressions allow you to populate node parameters dynamically by executing JavaScript code. Instead of providing a static value, you can use the n8n expression syntax to define the value using data from previous nodes, other workflows, or your n8n environment.


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