Here is a list of all variables with links to the files they belong to:

• kDefaultDisplayHeight_m : xr_api_defs.h
• kDefaultDisplayTilt_rad : xr_api_defs.h
• kDefaultDisplayWidth_m : xr_api_defs.h
• kDefaultHorizontalResolution_px : xr_api_defs.h
• kDefaultVerticalResolution_px : xr_api_defs.h
• kDeviceProductIdMaxSize : xr_api_defs.h
• kDeviceSerialNumberMaxSize : xr_api_defs.h
• kXrSystemErrorMsgSize : xr_api_defs.h
• PLATFORM_OPTION_APPLICATION_IS_UNREALENGINE : xr_platform_option.h
• PLATFORM_OPTION_NONE : xr_platform_option.h
• RUNTIME_OPTION_IS_XR_CONTENT : xr_runtime_option.h
• RUNTIME_OPTION_NONE : xr_runtime_option.h