The Commens Dictionary
Quote from ‘Draft of Nichols Review [C]’
..there are signs that both can be and have to be interpreted in an appropriate act and deed, in order that their peculiar purport may be conveyed. Let a man write his name on a scrap of paper, and it means nothing; but let him affix it to a legal instrument or affidavit, and it asserts. Such an assertive sign is technically named a dicisign.