> For the complete documentation index, see [llms.txt](https://www.xrdev.app/mixed-reality-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.xrdev.app/mixed-reality-docs/webxr-lessons/a-frame/basic-a-frame-scene.md).
# Basic A-Frame Scene
```html
```
Primitives are similar to [prefabs in Unity](https://docs.unity3d.com/Manual/Prefabs.html). They abstract the core entity-component API to:
* Pre-compose useful components together with prescribed defaults
* Act as a shorthand for complex-but-common types of entities (e.g., ``)
* Provide a familiar interface for beginners since A-Frame takes HTML in a new direction
You can see the resulting page on Glitch
{% embed url="" %}
Basic Aframe scene on Glitch
{% endembed %}
---
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