# Window

> Asset Transformer Studio window panels reference

Asset Transformer Studio user interface is mainly composed of a Main Toolbar at the top (fixed), and of a set of panels.

The way these panels are disposed defines the program's Window, or workspace.

## Window panels

Panels give access to the tools and functionalities necessary to interact with the scene and its content:

* [Viewer](/asset-transformer-studio/2026.5.0/manual/user-interface/window/viewer.md): displays the 3D objects of the scene
* [Product Structure (Tree)](/asset-transformer-studio/2026.5.0/manual/user-interface/window/product-structure-tree.md): displays the scene's Product Structure, or Tree
* [Inspector](/asset-transformer-studio/2026.5.0/manual/user-interface/window/inspector.md): shows information about the selected occurrences
* [Variants and PMI](/asset-transformer-studio/2026.5.0/manual/user-interface/window/variants-and-pmi.md): manages the potential variants and PMIs existing in the scene
* [Visualization](/asset-transformer-studio/2026.5.0/manual/user-interface/window/visualization.md): gives access to the scene's main display settings
* [Tools](/asset-transformer-studio/2026.5.0/manual/user-interface/window/tools.md): gathers a set of tools meant to manipulate the objects of the scene
* [Scripting](/asset-transformer-studio/2026.5.0/manual/user-interface/window/scripting.md): is the Python script editor window
* [Output](/asset-transformer-studio/2026.5.0/manual/user-interface/window/output.md): logs all the events occurring in the scene

## Managing the window

The window layout (workspace) is entirely customizable (see [Customizing the User Interface](/asset-transformer-studio/2026.5.0/manual/user-interface/customizing-the-user-interface.md)), including a smart docking system, giving the user more flexibility to create their preferred workspace and be more efficient.

![Customize workspace](/api/media?file=/asset-transformer-studio/2026.5.0/media/STUDIO_Customize.gif)

**Related topics**

* [Customizing the User Interface](/asset-transformer-studio/2026.5.0/manual/user-interface/customizing-the-user-interface.md)
* [Window Menu](/asset-transformer-studio/2026.5.0/manual/user-interface/menu-bar/window-menu.md)