If any of them is missing or inadequate, the program is proprietary (nonfree)
non-free software = proprietary software
missing any of these = non-conformant license (relative to a free software license)
If any of them is missing or inadequate, the program is proprietary (nonfree)
non-free software = proprietary software
missing any of these = non-conformant license (relative to a free software license)
Dumbrava, C. & Sabbati, G. (2020, March 30). The impact of coronavirus on Schengen borders. European Parliamentary Research Service Blog. https://epthinktank.eu/2020/03/30/the-impact-of-coronavirus-on-schengen-borders/