Cardo is a large Unicode font specifically designed for the needs of classicists, Biblical scholars, medievalists, and linguists. Since it may be used to prepare materials for publication, it also contains features that are required for high-quality typography, such as ligatures, text figures (also known as old style numerals), true small capitals and a variety of punctuation and space characters. It may also be used to document and discuss the features of Unicode that are applicable to the these disciplines, as we work to help colleagues understand the value (and limitations) of Unicode.