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docs/snippets/csharp/config/pdf_hierarchy_config.md

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+```csharp title="C#"
+using Kreuzberg;
+
+// Basic hierarchy configuration with properties
+var config = new ExtractionConfig
+{
+    PdfOptions = new PdfConfig
+    {
+        ExtractImages = true,
+        Hierarchy = new HierarchyConfig
+        {
+            Enabled = true,
+            KClusters = 6,
+            IncludeBbox = true,
+            OcrCoverageThreshold = 0.8f
+        }
+    }
+};
+
+var result = await KreuzbergLib.ExtractFileAsync("document.pdf", config);
+Console.WriteLine($"Content length: {result.Content.Length}");
+
+// Advanced hierarchy detection with custom parameters
+var advancedConfig = new ExtractionConfig
+{
+    PdfOptions = new PdfConfig
+    {
+        ExtractImages = true,
+        Hierarchy = new HierarchyConfig
+        {
+            Enabled = true,
+            KClusters = 12,           // More clusters for detailed hierarchy
+            IncludeBbox = true,       // Include bounding box coordinates
+            OcrCoverageThreshold = 0.7f  // Higher OCR threshold for stricter detection
+        }
+    }
+};
+
+var result = await KreuzbergLib.ExtractFileAsync("complex_document.pdf", advancedConfig);
+Console.WriteLine($"Advanced hierarchy detection completed: {result.Content.Length} chars");
+
+// Minimal configuration with only enabled flag
+var minimalConfig = new ExtractionConfig
+{
+    PdfOptions = new PdfConfig
+    {
+        Hierarchy = new HierarchyConfig
+        {
+            Enabled = true,
+            // Other properties use defaults:
+            // KClusters = 6
+            // IncludeBbox = true
+        }
+    }
+};
+
+var result = await KreuzbergLib.ExtractFileAsync("document.pdf", minimalConfig);
+Console.WriteLine("Extraction with default hierarchy settings complete");
+
+// Disabling hierarchy detection
+var noHierarchyConfig = new ExtractionConfig
+{
+    PdfOptions = new PdfConfig
+    {
+        Hierarchy = new HierarchyConfig
+        {
+            Enabled = false
+        }
+    }
+};
+
+var result = await KreuzbergLib.ExtractFileAsync("document.pdf", noHierarchyConfig);
+Console.WriteLine("Extraction without hierarchy detection complete");
+```