diff --git a/glossolalia/cleaner.py b/glossolalia/cleaner.py
index a3f4c4f..4abb5cc 100644
--- a/glossolalia/cleaner.py
+++ b/glossolalia/cleaner.py
@@ -2,6 +2,9 @@ from glossolalia import loader
 
 
 def clean(text):
+    # Replace literal newlines
+    # Remove empty lines
+    # Replace ’ by '
     pass