Man1 - openxr_runtime_list.1
is a minimal, command-line application written using the
API.
It accepts no arguments. At startup, it connects to your OpenXR runtime (if available) and reports the following data:
System name
System vendor ID
System ID
Available instance extensions and their versions.
https://www.khronos.org/registry/OpenXR/ , https://github.com/KhronosGroup/OpenXR-SDK-Source/tree/master/src/tests/list