Resumen
The article focuses on the Clear, Clean, Concise (3C) proposal of UML2 programming language. It makes the language easier to understand and enables it to describe a broader range of systems, from Web agents and services to entire business communities. 3C establishes a set of fundamental modeling concepts, stipulates how they apply to systems, and uses them to redefine the plethora of existing UML concepts. 3C applies the method used in geometry, physics, and other sciences in which a few primitive terms permit the definition of an indefinitely large number of other terms. The article explains five of the 3C primitives and introduce two defined concepts, inheritance and subtyping, showing how primitive concepts are used to define additional concepts. The 3C primitives discussed include individual, action, type, specifications, inheritance and subtyping. Redefining the UML specification using the stable infrastructure provided by 3C will make understanding UML concepts easier for software designers and business modelers, facilitating clearer communication among them.