This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Commonsselectionde. Pulldownmenu in German for choosing convenient licence when uploading to commons item of tutorial series author's own work Dominic Public Domain see also Image Commonsselection Commons screenshots
Page 2023 Free-images.com. All images are Public Domain