using static in C# 6.0

Often we use a class’s static methods throughout our code. Repeatedly typing the class name can obscure the meaning of your code. A common example is when you write classes that perform many numeric calculations. Your code will be littered with @System.Math.Sin, @System.Math.Sqrt and other calls to different methods in the Math class.
In C# 6.0 , we can go one step further and import the static members of a class into our namespace.This means we can use the static members of a class directly with no need to qualify them with their namespace or type name.

1 2	using static System.Math; using static System.Console;

it can eliminate a lot of redundant or superfluous type identifiers in the code and thus help improve readability

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public void UsingStaticFeature() {     var power = Pow(2, 2);     WriteLine(power); }