> For the complete documentation index, see [llms.txt](https://docs.mapsindoors.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mapsindoors.com/products/cms/categories.md).

# Categories

While location types are used for styling locations on the map, **categories** are intended for **filtering** and **enhancing search experiences.** You can also assign locations to multiple categories if needed.

For more info, [read here](/products/cms/interface-overview.md#categories).

### Subcategories

Subcategories add an extra layer to your categories, allowing you to create even more **advanced filtering** and search options for your end users, making the search experience easier and more efficient.

<figure><img src="/files/zhGHGOMZse1fviiLauPW" alt=""><figcaption><p>An example of using subcategories to add an extra filtering layer for "Restrooms," making it even easier for users to find their exactly what they are looking for</p></figcaption></figure>

You can set up "subcategories" in the CMS, under a category:

<figure><img src="/files/MhCDskkWEIk4Z35nqaz2" alt=""><figcaption></figcaption></figure>

* When you assign a category as a child or subcategory, you cannot use it as a parent.
* You cannot delete a parent category without first removing its children.

{% hint style="success" %}
The Web SDK supports reading subcategory values using `childKeys`
{% endhint %}

{% hint style="warning" %}
Mobile SDKs are not supported yet.
{% endhint %}