diff --git a/src/main.py b/src/main.py
index 8999435..e68399a 100644
--- a/src/main.py
+++ b/src/main.py
@@ -101,9 +101,6 @@ app.config["TEMPLATES_AUTO_RELOAD"] = True
 # Printer connection
 # Uses the class defined in the printer.py file
 printer = Printer(app, 0x04B8, 0x0E28)
-# printers = Printer(app)
-# printers.discover_printers()
-# printers.init()
 printer.init_printer()
 
 # Find out if we are running on a Raspberry Pi
@@ -122,20 +119,19 @@ RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
 # Queue creation
 print_queue = PrintQueue(app)
 
-#  Web & API  routes
+#  Web & API management
 web = Web(app, print_queue)
 
 # Start worker thread
 worker = PrintWorker(app, print_queue, printer, socketio)
 worker.start()
 
+# The rate limit
 limiter = Limiter(
     get_remote_address, app=app, default_limits=["1500 per day", "500 per hour"]
 )
 
 # General routes
-
-
 @app.route("/")
 @limiter.limit("1/second", override_defaults=False)
 def index():
@@ -153,8 +149,6 @@ def webcam():
 
 
 # Form treatement
-
-
 @app.route("/web/print/sms", methods=["POST"])
 @limiter.limit("6/minute", override_defaults=False)
 def web_print_sms():
@@ -185,7 +179,7 @@ def web_print_sms():
         return redirect(url_for("index"))
 
     # end try
-    flash("The SMS has been printed !", "info")
+    flash("The SMS has been added to the print queue !", "info")
     return redirect(url_for("index"))
 
 
@@ -227,7 +221,7 @@ def web_print_img():
         flash("The image could not be printed because : " + str(e), "error")
         return redirect(url_for("index"))
 
-    flash("Picture printed !", "info")
+    flash("Picture added to the print queue !", "info")
     return redirect(url_for("index"))
 
 
@@ -296,8 +290,7 @@ def api_print_image():
         return "No image submitted", 400
 
     file = request.files["img"]
-    # If the user does not select a file, the browser submits an
-    # empty file without a filename.
+    # If the user submits an empty file without a filename.
     if file.filename == "":
         app.logger.error("Submitted file has no filename !")
         return "Submitted file has no filename !", 400
@@ -337,12 +330,18 @@ def api_worker_state():
 
 @app.route("/api/worker/start")
 def api_worker_start():
+    """
+    Enable to worker. This starts to process the print queue.
+    """
     worker.start_worker()
     return jsonify(worker.current_state())
 
 
 @app.route("/api/worker/stop")
 def api_worker_stop():
+    """
+    Stops the print queue. This stops the processing of the print queue.
+    """
     worker.stop_worker()
     return jsonify(worker.current_state())