C# has been pretty scrupulous about using contextual keywords instead of reserved keywords when they add new language features. That's why, e.g., they went with

C# has been pretty scrupulous about using contextual keywords instead of reserved keywords when they add new language features. That's why, e.g., they went with "yield return foo" instead of the more traditional "yield foo." They also let you define "var," which normally denotes type inference, as a normal type, and "var" will refer to the defined type in contexts where it is accessible.