> For the complete documentation index, see [llms.txt](https://apertus.gitbook.io/vr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apertus.gitbook.io/vr/introduction.md).

# Introduction

- [Definitions](https://apertus.gitbook.io/vr/introduction/definitions.md)
- [Coordinate systems](https://apertus.gitbook.io/vr/introduction/definitions/coordinate-systems.md)
- [Primitives](https://apertus.gitbook.io/vr/introduction/definitions/primitives.md)
- [Features](https://apertus.gitbook.io/vr/introduction/features.md)
- [Basic](https://apertus.gitbook.io/vr/introduction/features/basic.md)
- [Nodes](https://apertus.gitbook.io/vr/introduction/features/basic/nodes.md)
- [Light sources](https://apertus.gitbook.io/vr/introduction/features/basic/light-sources.md)
- [Geometries](https://apertus.gitbook.io/vr/introduction/features/basic/geometry.md)
- [Primitives](https://apertus.gitbook.io/vr/introduction/features/basic/primitives.md)
- [Texts](https://apertus.gitbook.io/vr/introduction/features/basic/texts.md)
- [Environment simulation](https://apertus.gitbook.io/vr/introduction/features/environment-simulation.md)
- [Water](https://apertus.gitbook.io/vr/introduction/features/environment-simulation/water.md)
- [Sky](https://apertus.gitbook.io/vr/introduction/features/environment-simulation/sky.md)
- [Terrain](https://apertus.gitbook.io/vr/introduction/features/environment-simulation/terrain.md)
- [Browser](https://apertus.gitbook.io/vr/introduction/features/browser.md)
- [UI technologies](https://apertus.gitbook.io/vr/introduction/features/ui-technologies.md)
- [HTML UI](https://apertus.gitbook.io/vr/introduction/features/ui-technologies/html-ui.md)
- [Presentation](https://apertus.gitbook.io/vr/introduction/features/ui-technologies/presentation.md)
- [Gallery](https://apertus.gitbook.io/vr/introduction/features/ui-technologies/gallery.md)
- [PointCloud](https://apertus.gitbook.io/vr/introduction/features/pointcloud.md)
- [360](https://apertus.gitbook.io/vr/introduction/features/360.md)
- [360 Images](https://apertus.gitbook.io/vr/introduction/features/360/360-images.md)
- [360 Videos](https://apertus.gitbook.io/vr/introduction/features/360/360-videos.md)
- [3D Model Formats](https://apertus.gitbook.io/vr/introduction/features/3d-model-formats.md)
- [Scene Sharing](https://apertus.gitbook.io/vr/introduction/features/scene-sharing.md)
- [Multiplayer](https://apertus.gitbook.io/vr/introduction/features/scene-sharing/multiplayer.md)
- [Video and Voice Chat](https://apertus.gitbook.io/vr/introduction/features/video-and-voice-chat.md)
- [Hand Tarcking](https://apertus.gitbook.io/vr/introduction/features/hand-tarcking.md)
- [Leap Motion](https://apertus.gitbook.io/vr/introduction/features/hand-tarcking/leap-motion.md)
- [Head Tracking](https://apertus.gitbook.io/vr/introduction/features/head-tracking.md)
- [Fob](https://apertus.gitbook.io/vr/introduction/features/head-tracking/fob.md)
- [Displays](https://apertus.gitbook.io/vr/introduction/features/displays.md)
- [Multi Display](https://apertus.gitbook.io/vr/introduction/features/displays/multi-display.md)
- [Cave System](https://apertus.gitbook.io/vr/introduction/features/displays/cave-system.md)
- [HMDs](https://apertus.gitbook.io/vr/introduction/features/displays/hmds.md)
- [Industry](https://apertus.gitbook.io/vr/introduction/features/industry.md)
- [IoT, and Sensors](https://apertus.gitbook.io/vr/introduction/features/industry/iot-and-sensors.md)
- [Robot monitoring](https://apertus.gitbook.io/vr/introduction/features/industry/robot-monitoring.md)
- [Robot calibration](https://apertus.gitbook.io/vr/introduction/features/industry/robot-calibration.md)


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