Cola by citric or other isolated acids. Coca-Cola's recipe is maintained as a corporate trade secret. A variety of different sweeteners may be added to cola, often partly dependent on local agricultural policy. High-fructose corn syrup (HFCS) is predominantly used in the United States and Canada due to the lower cost of government-subsidized corn. In Europe, however, HFCS is subject to production quotas designed to encourage the production of sugar; sugar is thus typically used to sweeten sodas. In addition, stevia or an artificial sweetener may be used; "sugar-free" or "diet" colas typically contain artificial sweeteners only. In the 1940s, Coca-Cola
COLA (software architecture) COLA (software architecture) COLA stands for Combined Object Lambda Architecture, and is a system for experimenting with software design currently being investigated by the Viewpoints Research Institute. A COLA is a self-describing language in two parts, an object system which is implemented in terms of objects, and a functional language to describe the computation to perform. Since a COLA is written in itself, the whole environment (when bootstrapped) can be rewritten and extended by programming with the COLA; in other words, it does not require more knowledge to rewrite a COLA than it does to write a program to run