# Glossary of terms **Editor** – a graphics engine, a tool for creating/editing AR projects. Includes a toolbar, an element (object) tree, a preview window, and a properties inspector. **AR project (or project)** – a scene or a set of scenes in an augmented reality layer.\ An AR project is always a single QR code (a single project address). **Scene** – an object or a group of objects with their properties and animation in the augmented reality layer. When a project is opened, one scene is always opened, which can switch to a new one by clicking a button or a new scene can open when the project is reopened (randomization). **Object** – any element in three-dimensional space from which a scene is built. Each object has a type with a corresponding set of parameters. **Element tree** – the structure of objects presented in the project. **Object properties** – parameters of the object set in the editor (position, rotation, scale, transparency, brightness, color, animation, etc.). **Object type** determines its behavior and set of properties.\ Object types – group, button, primitive (a primitive can be an image, video, transparent wall, or volumetric shape), model (three-dimensional mockup – 3D model), text, background. --- # 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://docs.artar.es/project-creation/general-information-about-working-with-a-project/glossary-of-terms.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.