diff --git a/app.py b/app.py
index 7c1dffb..255a951 100644
--- a/app.py
+++ b/app.py
@@ -14,6 +14,7 @@ ALG_PREFIX = {
     'sha256': '$5$',
 }
 
+# The main route
 @app.route('/')
 def index():
     return render_template('index.html')