The “&” signal is called ampersand as it used to necessarily mean “and for each se and.” This intended that the main “and” referred to the second “and.” Of course, this that means is nonsensical these days, but we altered “and for each se and” to simply be “ampersand.” The https://arzneimittelinformationen09753.wikikarts.com/878447/5_essential_elements_for_signs