Marcus Tullius Tiro built a shorthand of roughly 4,000 symbols so he could take Cicero down verbatim, and Roman scribes went on using it for centuries. One character outlived the whole system. ⁊ — the Tironian et, standing in for Latin et, “and” — sits in Unicode at U+204A, which means you can still type a mark invented for a speech about Catiline nearly 21 centuries ago.