diff --git a/python/obitools3/apps/optiongroups/__init__.py b/python/obitools3/apps/optiongroups/__init__.py
index 894a965..9a1800c 100755
--- a/python/obitools3/apps/optiongroups/__init__.py
+++ b/python/obitools3/apps/optiongroups/__init__.py
@@ -210,8 +210,8 @@ def addAllInputOption(optionManager):
 
 def __addOutputOption(optionManager):
     
-    optionManager.add_argument(
-                    dest='obi:outputURI',  
+    optionManager.add_argument('-o',
+                    dest='obi:outputURI',
                     metavar='OUTPUT', 
                     help='Data destination URI')
 
@@ -268,6 +268,15 @@ def __addExportOutputOption(optionManager):
                      help="String associated with Non Available (NA) values in the output")
 
 
+def __addNoProgressBarOption(optionManager):
+    group = optionManager.add_argument_group("Option to deactivate the display of the progress bar")
+
+    group.add_argument('--no-progress-bar',
+                     action="store_true", dest="obi:noprogressbar",
+                     default=False,
+                     help="Do not display progress bar")
+
+
 def addMinimalOutputOption(optionManager):
     __addOutputOption(optionManager)
     __addDMSOutputOption(optionManager)
@@ -289,3 +298,7 @@ def addAllOutputOption(optionManager):
     __addExportOutputOption(optionManager)
     __addTabularOption(optionManager)
 
+
+def addNoProgressBarOption(optionManager):
+    __addNoProgressBarOption(optionManager)
+