Sampi is mostly represented in modern writing by a glyph resembling a π slanted rightwards, which is the reason for its name in Modern Greek. In ancient epigraphy, there were other shapes, including one resembling an upright T, as seen on ancient Roman coins. The Unicode standard of modern computer encoding has introduced two sets of codepoints for these two usages, both with an uppercase and lowercase variant: T-shaped alphabetic U+0372/U+0373 (Ͳ/ͳ, ), and Π-shaped numeric U+03E0/U+03E1 (Ϡ/ϡ).