> For the complete documentation index, see [llms.txt](https://help.transmutr.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.transmutr.com/outliner.md).
# Outliner
The **Outliner** shows the hierarchy of the loaded geometry model. Use it to select objects or parts of objects, disable geometry, override [simplification](/simplification.md), assign [materials](/materials.md), and define **blobs** for [proxy export](/exporting/proxies.md).
{% hint style="info" %}
The Outliner is available for geometry models only. Materials-only sessions hide it.
{% endhint %}
## Basic navigation
* Expand and collapse nodes to explore groups and meshes.
* Click a row to select it (selection syncs with the viewport).
* Use **Delete** / **Restore** on a node to exclude objects from export or bring it back. Disabled subtrees appear dimmed.
## Per-object simplification
Click the simplification control on a object to open a slider for that object only. Reset clears the override so the global [Simplification](/simplification.md) slider applies again.
Per-object levels **override** the global simplification level. That is useful when you want to keep a hero part dense while simplifying the rest.
## Assign materials
Open the material menu on a node to:
* See materials **Assigned to node** / **Assigned to mesh**
* Pick from **Available materials**
* Clear an assignment
You can also paint from the Materials tab. See [Materials](/materials.md).
## Blobs
A **blob** is a volume that wraps selected objects. Blobs are used by the **Blobs** proxy placeholder type.
1. Select objects that should form a blob.
2. Click **Make blob** on the Outliner row.
3. Use **Remove blob** to clear the assignment.
4. Toggle **Show blobs** in the viewport to preview volumes.
5. When exporting, choose the **Blobs** proxy type.