Stigma (letter) sigma form ς never occurs inside a word and is never used as a numeral either. Uppercase forms of stigma as a numeral (Ϛ) are rare in practice; when they occur, they can often be confused with uppercase forms of another numeral symbol, koppa (Ϟϟ), which stands for 90. Stigma is encoded in Unicode as "Greek letter stigma" U+03DA (Ϛ) and "Greek small letter stigma" U+03DB (ϛ). Stigma (letter) Stigma (ϛ) is a ligature of the Greek letters sigma (Σ) and tau (Τ), which was used in writing Greek between the Middle Ages and the 19th century. It is also
Torque (game engine) successor to Torque Game Engine Advanced (TGEA), Torque 3D features PhysX support, modern shader features, an advanced deferred lighting model, as well as build support for Windows, macOS and Linux. DTS and DIF have been superseded by COLLADA, a more commonly supported interactive 3D model file format. The DIF format has been completely deprecated, while DTS is still used as an internal format. Torque 2D, originally Torque Game Builder, is a game engine designed for 2D games and based on the "Torque Game Engine". It was first released in 2006, in a "standard" and a "pro" version, with the professional