Expanded up Power of 10 guide

- Slight formatting tweak to  guide

documents/Powerof10Guide.md

@@ -1,6 +1,8 @@
 # NASA-style Programming for C#
 
-I asked the AI to write their instructions in the form of guidelines. I figured I'd use C# since it's both my preferred language and the syntax should be fairly easy to grasp once you understand the basics. 
+I asked the AI to write their [NASA-style](https://en.wikipedia.org/wiki/The_Power_of_10:_Rules_for_Developing_Safety-Critical_Code) [coding instructions](Powerof10PPrompt.txt) in the form of guidelines. I figured I'd use C# since it's both my preferred language and the syntax should be fairly easy to grasp once you understand the basics.
+
+Why NASA? Their coding standards have loads of redundancies, and if AI is going to behave like advanced code generation tools, they need to be as fault-tolerant as possible. While my instructions were modified to account for modern languages, the principles are still the same.
 
 My only request was to apply .NET 6's [top-level statements](https://learn.microsoft.com/en-us/dotnet/csharp/tutorials/top-level-statements) for brevity. Aside from a few organizational tweaks with the guidelines and fixing the scope example to be wrapped in a class, it all works flawlessly.
 
@@ -9,7 +11,7 @@ My only request was to apply .NET 6's [top-level statements](https://learn.micro
 - Keep the code simple and coherent. Use meaningful identifiers and limit the complexity of expressions.
 - Keep functions or methods short, with a single responsibility.
 
-**Example:**
+### Example:
 
 ```csharp
 // Good example of a short, focused method
@@ -28,7 +30,7 @@ Console.WriteLine($"The sum is {result}");
 - Validate and sanitize inputs to prevent security vulnerabilities like injection attacks.
 - Use try-catch blocks to handle exceptions gracefully.
 
-**Example:**
+### Example:
 
 ```csharp
 using System.Globalization;
@@ -49,7 +51,7 @@ else
 - Use environment variables or configuration files for environment-specific settings.
 - Rely on cross-platform libraries within .NET.
 
-**Example:**
+### Example:
 
 ```csharp
 // Reading configuration using environment variables
@@ -69,7 +71,7 @@ else
 - Prefer `using` statements to safely manage resource cleanup.
 - Avoid excessive memory allocation and prefer stack-allocated variables.
 
-**Example:**
+### Example:
 
 ```csharp
 // Using statement to ensure safe disposal
@@ -87,7 +89,7 @@ using (var reader = new StreamReader("example.txt"))
 
 - Limit the visibility of variables and functions to the smallest scope necessary.
 
-**Example:**
+### Example:
 
 ```csharp
 namespace Application;
@@ -113,7 +115,7 @@ class Program
 
 - Sanitize and validate all external inputs to secure your application.
 
-**Example:**
+### Example:
 
 ```csharp
 using System.Web;
@@ -134,7 +136,7 @@ else
 
 - Use XML documentation comments for functions or methods to improve maintainability and provide documentation.
 
-**Example:**
+### Example:
 
 ```csharp
 /// <summary>
@@ -149,6 +151,25 @@ int Sum(int a, int b)
 }
 ```
 
+### 8. Use Preprocessors, Macros, or Metaprogramming Techniques Sparingly to Maintain Code Clarity
+
+- Preprocessor directives can be useful for conditional compilation but should be used judiciously to avoid obscuring the code.
+
+### Example:
+
+```csharp
+#if DEBUG
+Console.WriteLine("Running in Debug mode.");
+#else
+Console.WriteLine("Running in Release mode.");
+#endif
+
+int result = Sum(5, 3);
+Console.WriteLine($"The sum is {result}");
+
+int Sum(int a, int b) => a + b;
+```
+
 ## Example Using Top-Level Statements in .NET 6
 
 Combining several of the above principles: