https://ctan.org/pkg/magicwatermark?lang=de
CTAN: Paket magicwatermark
ctanpaket
https://www.ctan.org/recommendations/magicwatermark
CTAN: Suggestions for magicwatermark
ctansuggestions
https://www.ctan.org/ctan-ann/pkg/magicwatermark
CTAN: CTAN-ann - magicwatermark
ctanann