--- data/input/sample4.txt	2025-05-08 10:09:07
+++ data/input/sample4_modified1.txt	2025-05-08 10:18:46
@@ -2,31 +2,53 @@
 
 ## Overview
 
-This is a sample project documentation file that demonstrates the unified diff format patch application.
+This is a sample project documentation file that demonstrates the unified diff format patch application. The project aims to provide a robust framework for testing and applying patches.
 
 ## Features
 
 1. Feature A: Provides basic functionality
 2. Feature B: Enhances user experience
 3. Feature C: Optimizes performance
+4. Feature D: Supports multiple file formats
+5. Feature E: Automated testing capabilities
 
 ## Installation
 
 To install this project, follow these steps:
 
 1. Clone the repository
+   ```
+   git clone https://github.com/example/project.git
+   ```
 2. Install dependencies
+   ```
+   npm install
+   ```
 3. Configure settings
+   ```
+   cp config.example.json config.json
+   ```
 4. Run the application
+   ```
+   npm start
+   ```
 
 ## Usage
 
 The application can be used as follows:
 
 ```
-$ app --config=config.json
+$ app --config=config.json --verbose
 ```
 
+For advanced usage, refer to the following examples:
+
+```
+$ app --help
+$ app --version
+$ app --config=config.json --output=output.log
+```
+
 ## Contributing
 
 Contributions are welcome! Please follow these guidelines:
@@ -34,7 +56,13 @@
 - Write clean code
 - Add tests for new features
 - Update documentation
+- Follow the code style guidelines
+- Submit pull requests for review
 
 ## License
 
 This project is licensed under the MIT License.
+
+## Acknowledgements
+
+Special thanks to all contributors who have helped make this project possible.
