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+# Documentation Attribute IDE Tooltip Example
+
+## Before (Without XML Doc Generator)
+
+When using the `DocumentationAttribute` without the XML Doc Generator, IDEs would not show the documentation:
+
+```csharp
+[Documentation(
+    "BenchmarkUtility", 
+    "Utility class for benchmarking code execution time.", 
+    null, 
+    @"```csharp
+BenchmarkUtility.Start(""MyBenchmark"");
+// Code to benchmark
+BenchmarkUtility.Stop(""MyBenchmark"");
+var results = BenchmarkUtility.GetResults(""MyBenchmark"");
+```")]
+public class BenchmarkUtility
+{
+    // ...
+}
+```
+
+**IDE Hover Tooltip Shows:** No documentation (just the class signature)
+
+---
+
+## After (With XML Doc Generator)
+
+With the XML Doc Generator running as part of the build, the same code automatically generates XML documentation that appears in IDE tooltips:
+
+### Generated XML Documentation:
+```xml
+<member name="T:OmegaLeo.HelperLib.Helpers.BenchmarkUtility">
+    <summary>Utility class for benchmarking code execution time.</summary>
+    <example><![CDATA[```csharp
+BenchmarkUtility.Start("MyBenchmark");
+// Code to benchmark
+BenchmarkUtility.Stop("MyBenchmark");
+var results = BenchmarkUtility.GetResults("MyBenchmark");
+```]]></example>
+</member>
+```
+
+**IDE Hover Tooltip Now Shows:**
+- **Summary:** "Utility class for benchmarking code execution time."
+- **Example:** Full code example with syntax highlighting
+
+---
+
+## Real-World Example: Method with Parameters
+
+```csharp
+[Documentation(
+    "AverageWithNullValidation",
+    "Calculates the average of a list of integers, returning 0 if the list is empty.",
+    new string[] { "list: The list of integers to calculate the average from." },
+    @"```csharp
+var numbers = new List<int> { 1, 2, 3, 4 };
+int average = numbers.AverageWithNullValidation(); // average will be 2
+var emptyList = new List<int>();
+int averageEmpty = emptyList.AverageWithNullValidation(); // averageEmpty will be 0
+```")]
+public static int AverageWithNullValidation(this IEnumerable<int> list)
+{
+    return list.Any() ? (int)list.Average() : 0;
+}
+```
+
+### Generated XML:
+```xml
+<member name="M:OmegaLeo.HelperLib.Extensions.MathExtensions.AverageWithNullValidation(System.Collections.Generic.IEnumerable{System.Int32})">
+    <summary>Calculates the average of a list of integers, returning 0 if the list is empty.</summary>
+    <remarks>
+Parameters:
+  - list: The list of integers to calculate the average from.
+</remarks>
+    <example><![CDATA[```csharp
+var numbers = new List<int> { 1, 2, 3, 4 };
+int average = numbers.AverageWithNullValidation(); // average will be 2
+var emptyList = new List<int>();
+int averageEmpty = emptyList.AverageWithNullValidation(); // averageEmpty will be 0
+```]]></example>
+</member>
+```
+
+**IDE Hover Tooltip Now Shows:**
+- **Summary:** "Calculates the average of a list of integers, returning 0 if the list is empty."
+- **Remarks:** Parameter documentation
+- **Example:** Complete usage example with expected behavior
+
+---
+
+## Benefits
+
+1. **Rich Documentation in IDE:** See full descriptions, parameters, and examples without leaving your code
+2. **Automatic Generation:** No manual XML comment writing - it's all generated from the attribute
+3. **DRY Principle:** Define documentation once in the attribute, use it for both runtime and design-time
+4. **Better IntelliSense:** Enhanced code completion with examples and detailed descriptions
+5. **Consistent Format:** All documentation follows .NET XML documentation standards
+
+---
+
+## How to View in Your IDE
+
+### Visual Studio
+- **Hover** over any class/method/property with DocumentationAttribute
+- **Quick Info** (Ctrl+K, Ctrl+I) for detailed view
+
+### JetBrains Rider
+- **Hover** over the symbol
+- **Quick Documentation** (Ctrl+Q or F1) for full documentation panel
+
+### VS Code (with C# extension)
+- **Hover** over the symbol for IntelliSense popup
+- Shows summary and examples inline