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+
+  # How to Use and Customize the "Populate External Docs" Command in the VS Code Extension
+
+## Step 1: Access the Command
+
+1. Open your VS Code workspace
+2. Press `Cmd+Shift+P` (Mac) or `Ctrl+Shift+P` (Windows/Linux) to open the command palette
+3. Type "Populate External Docs" and select the command
+
+
+## Step 2: Customizing Generation with dev-docs.json
+
+To customize the documentation generation, modify the `dev-docs.json` file in your project root:
+
+1. Create or open `dev-docs.json`
+2. Add an `ai` object with customization options
+
+Example `dev-docs.json`:
+
+```json
+{
+  "ai": {
+    "internalTypeFilters": ["class", "method", "function"],
+    "codeFilters": [],
+    "nameFilters": [],
+    "docSubFolder": "api/",
+    "merge": true,
+    "externalDocPrompt": "Generate comprehensive API documentation"
+  }
+}
+```
+
+Key customization options:
+
+- `internalTypeFilters`: Specify which code elements to document
+- `docSubFolder`: Set the output folder for generated docs
+- `merge`: Combine multiple elements into a single document
+- `externalDocPrompt`: Customize the AI prompt for doc generation
+
+The `generateBySymbols` function in `src/AiServices.ts` uses these settings to generate documentation.
+
+## Step 3: Review and Edit
+
+After running the command:
+
+1. Check the `docs` folder (or your specified `docSubFolder`) for generated files
+2. Review and edit the generated content as needed
+3. Commit changes to your repository
+
+By following these steps and customizing the `dev-docs.json`, you can efficiently generate and manage external documentation for your project using the VS Code extension.
+
+  
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