Upholstery color and cockpit ergonomics... Okay, I guess that falls under the category of systems testing, so... sure! For maat, I'm not a commercial guy, my testing was mostly military, but since no one else seems to be offering a decode, EDFCS is enhanced digital flight control system, FMS is flight management system, RNP is typically used in this environment for required navigation performance, GLS is normally used for various forms of GPS-aided landing systems, HUD is heads up display, and I believe LAND 3 is hands-off socked-in autoland. But I'm just a fighter puke, so take all of that with a grain of salt.