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+### Introduction
+
+OpenXR is an interface defined by Khronos Group. Implementation of the interface is done by each VR headset vendor differently.
+
+### Files
+
+The used interface (headers in C language) is an older version because Pico doesn't support the latest one yet.
+The Implementations are taken from the vendor specific SDKs.
+
+### Links
+
+- Khronos OpenXR SDK: https://github.com/KhronosGroup/OpenXR-SDK/
+- Oculus OpenXR SDK: https://developer.oculus.com/downloads/package/oculus-openxr-mobile-sdk/
+- Pico OpenXR SDK https://developer-global.pico-interactive.com/sdk?deviceId=1&platformId=3&itemId=11