# Namespaces This content has moved to the [`dotnet/csharpstandard`](https://github.com/dotnet/csharpstandard) repository. The list below provides links to each heading in this section. The links specify the C# 6 branch, which is version when the specifications merged. > To view the text of the Microsoft spec before merging with the ECMA text, checkout the [ms-spec-text](https://github.com/dotnet/csharplang/releases/tag/ms-spec-text) tag in this repository. - [Namespaces](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#13-namespaces) - [Compilation units](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#132-compilation-units) - [Namespace declarations](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#133-namespace-declarations) - [Extern aliases](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#134-extern-alias-directives) - [Using directives](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#135-using-directives) - [Using alias directives](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#1352-using-alias-directives) - [Using namespace directives](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#1353-using-namespace-directives) - [Using static directives](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#1354-using-static-directives) - [Namespace members](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#136-namespace-member-declarations) - [Type declarations](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#137-type-declarations) - [Namespace alias qualifiers](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#138-qualified-alias-member) - [Uniqueness of aliases](https://github.com/dotnet/csharpstandard/blob/draft-v6/standard/namespaces.md#1382-uniqueness-of-aliases)