# 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 %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.xrdev.app/mixed-reality-docs/webxr-lessons/a-frame/basic-a-frame-scene.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.