The SITE Santa Fe Museum of Contemporary Art is a special museum, in that it is a profoundly revolutionary element that subverts, without explicit declarations, non-expressed but constant rules that appear with such... (drosteeffectmag.com)
Basically, the idea of an NFL campaign against the USFL was initially floated as a cartoonishly explicit declaration of war. (sbnation.com)
Intent to renounce citizenship is established only by explicit declaration if you've only obtained citizenship in another country. (law.stackexchange.com)