--- a/Utilities/BackgroundService.py	Sun Apr 09 16:52:55 2017 +0200
+++ b/Utilities/BackgroundService.py	Sat May 06 13:43:21 2017 +0200
@@ -32,6 +32,12 @@
 class BackgroundService(QTcpServer):
     """
     Class implementing the main part of the background service.
+    
+    @signal serviceNotAvailable(function, language, filename, message)
+        emitted to indicate the non-availability of a service function
+        (str, str, str, str)
+    @signal batchJobDone(function, language) emitted to indicate the end of
+        a batch job (str, str)
     """
     serviceNotAvailable = pyqtSignal(str, str, str, str)
     batchJobDone = pyqtSignal(str, str)