To create dynamic copyright messaging that will update as time passes and stay accurate when the author's death year (ADY) is known. Direction for including ADY is in each template document.
- Published prior to 1923, ADY 100+ years ago {{PD-old}}
- Published prior to 1923, ADY anything less than 100 years ago {{Pd/1923}}
- Published after 1922 and before 1964, Non-renewal confirmed {{PD-US-no-renewal}}
- Published between 1923 and 1996 {{Pd/1996}}