> For the complete documentation index, see [llms.txt](https://usermanual.ergonode.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://usermanual.ergonode.com/product-design/category-trees.md).
# Category trees
Category trees allow to design and manage product catalogs with multiple categories arranged in a hierarchical structure.
To create a new tree click on *+ NEW TREE*. Fill in the Category tree code (system name) for this tree and click on *CREATE* to save or *CREATE & EDIT* to save and open in edition mode.
{% hint style="info" %}
Category tree code can have only letters, digits, or underscore symbols.
{% endhint %}
When opened in edition mode three tabs will be available: [General](/product-design/category-trees/general.md), [Translations](/product-design/category-trees/translations.md), and [Designer](/product-design/category-trees/designer.md).
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