Update edited articles per templates

Apply the current template styles to all impacted articles in this PR.

Author: BillWagner

docfx.json

@@ -252,6 +252,7 @@
                 "docs/core/unmanaged-api/**/*.md": "reference",
                 "docs/core/whats-new/**/*.md": "whats-new",
                 "docs/csharp/advanced-topics/interface-implementation/**.md": "tutorial",
+                "docs/csharp/fundamentals/program-structure/**.md": "concept-article",
                 "docs/csharp/getting-started/**/*.md": "overview",
                 "docs/csharp/how-to/**/*.md": "how-to",
                 "docs/csharp/language-reference/**/*.md": "language-reference",

docs/csharp/fundamentals/program-structure/index.md

@@ -1,8 +1,12 @@
 ---
 title: "General structure of a C# program"
 description: Learn how C# programs are structured, including the choice between file-based and project-based apps, top-level statements and Main method entry points, and the building blocks that make up every program.
-ms.date: 03/13/2026
+ms.date: 03/16/2026
+ms.topic: concept-article
 ai-usage: ai-assisted
+
+#customer intent: As a C# developer, I want to understand how C# programs are structured so that I can choose the right application style and organize my code effectively.
+
 ---
 # General structure of a C# program
 
@@ -108,17 +112,12 @@ var f = Math.Max(a, b) + Math.Max(c, d);
 
 For detailed information about statements, see [Statements](../../programming-guide/statements-expressions-operators/statements.md). For information about expression-bodied members, see [Expression-bodied members](../../programming-guide/statements-expressions-operators/expression-bodied-members.md).
 
-## Related sections
-
-Learn about these program elements in the [types](../types/index.md) section of the fundamentals guide:
+## Related content
 
 - [Classes](../types/classes.md)
 - [Structs](../../language-reference/builtin-types/struct.md)
 - [Namespaces](namespaces.md)
 - [Interfaces](../types/interfaces.md)
 - [Enums](../../language-reference/builtin-types/enum.md)
 - [Delegates](../../delegates-overview.md)
-
-## C# language specification
-
-For more information, see [Basic concepts](~/_csharpstandard/standard/basic-concepts.md) in the [C# Language Specification](~/_csharpstandard/standard/README.md). The language specification is the definitive source for C# syntax and usage.
+- [Basic concepts in the C# language specification](~/_csharpstandard/standard/basic-concepts.md)

docs/csharp/fundamentals/program-structure/main-command-line.md

@@ -1,7 +1,9 @@
 ---
 title: "Main() and command-line arguments"
 description: Learn about Main() and command-line arguments. The 'Main' method is the entry point of an executable program.
-ms.date: 03/13/2026
+ms.date: 03/16/2026
+ai-usage: ai-assisted
+#customer intent: As a C# developer, I want to understand the Main() method and command-line arguments so that I can define and control the entry point of my application.
 ---
 # Main() and command-line arguments
 
@@ -89,7 +91,7 @@ For a working example, see [How to display command-line arguments](../tutorials/
 
 [!INCLUDE[CSharplangspec](~/includes/csharplangspec-md.md)]
 
-## See also
+## Related content
 
 - <xref:System.Environment?displayProperty=nameWithType>
 - [How to display command line arguments](../tutorials/how-to-display-command-line-arguments.md)

docs/csharp/fundamentals/program-structure/namespaces.md

@@ -1,8 +1,11 @@
 ---
 title: "Namespaces and using directives"
 description: Learn how to organize C# code with namespaces, file-scoped namespace declarations, global usings, static usings, and type aliases.
-ms.date: 03/13/2026
+ms.date: 03/16/2026
 ai-usage: ai-assisted
+
+#customer intent: As a C# developer, I want to understand namespaces and using directives so that I can organize my types and simplify how I reference them in code.
+
 ---
 # Namespaces and using directives
 
@@ -90,6 +93,7 @@ Starting with C# 12, you can alias any type, including tuples and pointer types:
 
 For more advanced scenarios where two assemblies define the same fully qualified type name, use [extern alias](../../language-reference/keywords/extern-alias.md) to disambiguate between them.
 
-## C# language specification
+## Related content
 
-For more information, see the [Namespaces](~/_csharpstandard/standard/namespaces.md) section of the [C# language specification](~/_csharpstandard/standard/README.md).
+- [`using` directive (language reference)](../../language-reference/keywords/using-directive.md)
+- [Namespaces in the C# language specification](~/_csharpstandard/standard/namespaces.md)

docs/csharp/fundamentals/program-structure/preprocessor-directives.md

@@ -1,8 +1,11 @@
 ---
 title: "Preprocessor directives"
-description: Learn how to use the most common C# preprocessor directives—conditional compilation, regions, nullable context control, and warning suppression—in everyday development.
-ms.date: 03/13/2026
+description: Learn how to use the most common C# preprocessor directives—conditional compilation, regions, and warning suppression—in everyday development.
+ms.date: 03/16/2026
 ai-usage: ai-assisted
+
+#customer intent: As a C# developer, I want to understand preprocessor directives so that I can control conditional compilation, configure file-based apps, and manage compiler warnings.
+
 ---
 # Preprocessor directives
 
@@ -16,7 +19,6 @@ C# preprocessor directives tell the compiler what code to include, exclude, or t
 - **File-based apps** (`#:`) - configure file-based apps.
 - **Conditional compilation** (`#if` / `#elif` / `#else` / `#endif`) — include or exclude code based on build configuration or target framework.
 - **Warning suppression** (`#pragma warning`) — suppress or restore specific compiler warnings.
-- **Nullable context** (`#nullable`) — control nullable reference type analysis at a fine-grained level.
 
 ## File-based app directives
 
@@ -73,6 +75,7 @@ Use `#pragma warning disable` to suppress specific compiler warnings, and `#prag
 > [!TIP]
 > Always specify the warning number, such as `CS0168`, rather than disabling all warnings. This approach keeps the suppression targeted and makes it clear *why* a warning is being suppressed.
 
-## See also
+## Related content
 
-- [C# preprocessor directives (language reference)](../../language-reference/preprocessor-directives.md) — complete reference for all preprocessor directives.
+- [C# preprocessor directives (language reference)](../../language-reference/preprocessor-directives.md)
+- [File-based apps](../../../core/sdk/file-based-apps.md)

docs/csharp/fundamentals/program-structure/program-organization.md

@@ -1,8 +1,11 @@
 ---
 title: "Program organization"
 description: Learn how to organize C# programs using solutions, projects, assemblies, namespaces, and types to build maintainable, well-structured applications.
-ms.date: 03/13/2026
+ms.date: 03/16/2026
 ai-usage: ai-assisted
+
+#customer intent: As a C# developer, I want to understand how to organize my code using solutions, projects, assemblies, and namespaces so that I can build maintainable applications.
+
 ---
 # Program organization
 
@@ -85,8 +88,8 @@ Default to `internal` for types that other projects don't need. This practice hi
 - **Use `global using` directives.** Place common imports in a `GlobalUsings.cs` file to eliminate repetitive `using` lines across files. For more information, see [Namespaces and using directives](namespaces.md).
 - **Default to `internal`.** Only mark types `public` when other assemblies genuinely need them. You can always widen access later; narrowing it is a breaking change.
 
-## See also
+## Related content
 
-- [Namespaces and using directives](namespaces.md) — declare namespaces, import types with `using`, and configure global usings.
-- [Assemblies in .NET](../../../standard/assembly/index.md) — learn about assemblies, versioning, and deployment.
-- [.NET project SDKs](../../../core/project-sdk/overview.md) — view project file settings including `RootNamespace` and `ImplicitUsings`.
+- [Namespaces and using directives](namespaces.md)
+- [Assemblies in .NET](../../../standard/assembly/index.md)
+- [.NET project SDKs](../../../core/project-sdk/overview.md)

docs/csharp/fundamentals/program-structure/top-level-statements.md

@@ -1,7 +1,11 @@
 ---
 title: "Top-level statements - programs without Main methods"
 description: Learn about top-level statements. You can create programs without the ceremony of a Program class and a Main method.
-ms.date: 03/13/2026
+ms.date: 03/16/2026
+ai-usage: ai-assisted
+
+#customer intent: As a C# developer, I want to understand top-level statements so that I can write programs without explicit Main method boilerplate.
+
 ---
 # Top-level statements - programs without `Main` methods
 
@@ -65,7 +69,8 @@ The compiler generates a method to serve as the program entry point for a projec
 
 Starting with C# 14, programs can be [*file-based apps*](./index.md#building-and-running-c-programs), where a single file contains the program. You run *file-based apps* by using the command `dotnet <file.cs>`, or by using the `#!/usr/bin/env dotnet` directive as the first line (Unix shells only).
 
-## C# language specification
+## Related content
 
-[!INCLUDE[CSharplangspec](~/includes/csharplangspec-md.md)]
-[Feature specification - Top-level statements](~/_csharplang/proposals/csharp-9.0/top-level-statements.md)
+- [Main() and command-line arguments](main-command-line.md)
+- [General structure of a C# program](index.md)
+- [Feature specification - Top-level statements](~/_csharplang/proposals/csharp-9.0/top-level-statements.md)