update cfg section

README.md

@@ -159,6 +159,34 @@ The output will show:
 
 Use this feature to identify complex parts of your codebase that might benefit from refactoring.
 
+## Control Flow Graph (CFG) [Experimental]
+
+tlin supports generating control flow graphs (CFG) for functions, A CFG is a representation of all paths that might be traversed through a program during its execution.
+
+### What is CFG?
+
+A Control Flow Graph (CFG) is a graphical representation of the flow of control in a program. It shows:
+
+- All possible execution paths in a function
+- Basic blocks of code (sequences of instructions with no branches except at the end)
+- Branching points (if statements, loops, etc.)
+- Function entry and exit points
+
+### How to Generate CFG?
+
+To generate a CFG for a specific function, use the follow command:
+
+```bash
+tlin -cfg -func <function_name> <path>
+```
+
+Where:
+
+- `<function_name>` is the name of the function you want to analyze
+- `<file_or_directory_path>` is the path to the file or directory containing the function
+
+When you run this command, it outputs a string in DOT format. However, exporting to a file after rendering is not yet supported.
+
 ## Contributing
 
 We welcome all forms of contributions, including bug reports, feature requests, and pull requests. Please feel free to open an issue or submit a pull request.