diff --git a/README.md b/README.md
index d85817e..0556663 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,9 @@ python run_tests.py -q
 python run_tests.py --pattern=banner
 ```
 
+The GUI help dialog also mentions the launcher version flag and the targeted
+test-run pattern so you can find them quickly from inside the app.
+
 CI is configured via GitHub Actions to run the shared `run_tests.py` entrypoint.
 
 ## Banner detection
diff --git a/main.py b/main.py
index 120132c..39f9117 100644
--- a/main.py
+++ b/main.py
@@ -7,9 +7,11 @@
 
 
 def main():
+    """Start the Tkinter GUI launcher."""
     import tkinter as tk
 
     parser = argparse.ArgumentParser(
+        prog="python main.py",
         description="Launch the Port Scanner GUI",
         epilog="Use --version to print the installed app version and exit.",
     )
diff --git a/portscanner/__init__.py b/portscanner/__init__.py
index ffcfe59..5cbf72e 100644
--- a/portscanner/__init__.py
+++ b/portscanner/__init__.py
@@ -1,3 +1,5 @@
+"""Public package exports for the port scanner app."""
+
 __version__ = "0.2.1"
 
 
@@ -9,6 +11,7 @@ def get_version() -> str:
 from .utils import export_to_file, copy_to_clipboard
 from .gui import PortScannerApp
 
+# Keep the top-level package import friendly for the GUI and scripts.
 __all__ = [
     "__version__",
     "get_version",
diff --git a/portscanner/gui.py b/portscanner/gui.py
index ba119b7..d77fa7e 100644
--- a/portscanner/gui.py
+++ b/portscanner/gui.py
@@ -231,7 +231,7 @@ def create_widgets(self):
             font=("Segoe UI", 10, "bold"),
             bg="#6c6cff",
             fg="white",
-            command=lambda: self.root.clipboard_append("MIT License - see LICENSE file"),
+            command=self.copy_license_to_clipboard,
         )
         copy_license_btn.pack(anchor=tk.W, pady=(0, 12))
 
@@ -695,6 +695,11 @@ def _queue_reset_buttons(self):
     def _queue_error_dialog(self, title, message):
         self.root.after(0, messagebox.showerror, title, message)
 
+    def copy_license_to_clipboard(self):
+        self.root.clipboard_clear()
+        self.root.clipboard_append("MIT License - see LICENSE file")
+        self.root.update_idletasks()
+
     def _validate_host_field(self):
         val = self.normalize_host(self.host_entry.get().strip())
         try:
@@ -714,6 +719,7 @@ def show_help(self):
             "- Enter a target host or IP and press Scan.\n"
             "- Adjust start/end ports, thread count, and timeout.\n"
             "- Use python main.py --version to confirm the installed build.\n"
+            "- Use python run_tests.py --pattern=banner for targeted test runs.\n"
             "- The window title updates with the scan target and final open-port count.\n"
             "- Oversized scan ranges are rejected to avoid accidental heavy scans.\n"
             "- Use Export/Copy to save results.\n"