docstring

qtgui/submenus.py

@@ -474,11 +474,15 @@ class TransposeMenu(Submenu):
         self.done(True)
 
 class SecondaryProperties(Submenu):
+    """Lilypodn Settings and Properties.
+    Directly edits the backend score meta data. There is no api and no callbacks"""
+
     def __init__(self, mainWindow):
-        """Directly edits the backend score meta data. There is no api and no callbacks"""
+
         super().__init__(mainWindow, translate("submenus", "Lilypond Properties and Metada"), hasOkCancelButtons=True)
 
         dictionary = api.getMetadata() #Do not confuse with template/config METADATA. This is Lilypond title, composer etc.
+        #The dictionary is mutable. We edit in place. #TODO:  This might bite us in the future. But maybe it will not...
 
         test = set(type(key) for key in dictionary.keys())
         assert len(test) == 1