diff --git a/src/gui/notification-interface-proxy.hpp b/src/gui/notification-interface-proxy.hpp
index d7ca62e3d..cb8e3d52b 100644
--- a/src/gui/notification-interface-proxy.hpp
+++ b/src/gui/notification-interface-proxy.hpp
@@ -65,14 +65,15 @@ namespace facade {
   class Proxy<IHandle_GuiNotification>
     : public Holder<IHandle_GuiNotification>
     {
+      using Level = gui::NotifyLevel;
       
       //----Proxy-Implementation-of-GuiNotification--------
       
-      void displayInfo (string const& text)             override  { _i_.displayInfo (cStr(text));                         }
-      void markError (ID uiElement, string const& text) override  { _i_.markError(uiElement.getHash().get(), cStr(text)); }
-      void markNote  (ID uiElement, string const& text) override  { _i_.markNote (uiElement.getHash().get(), cStr(text)); }
-      void mutate (ID uiElement, DiffMessage& diff)     override  { _i_.mutate   (uiElement.getHash().get(), &diff);      }
-      void triggerGuiShutdown (string const& cause)     override  { _i_.triggerGuiShutdown (cStr(cause));                 }
+      void displayInfo (Level level, string const& text) override  { _i_.displayInfo (level, cStr(text));                  }
+      void markError (ID uiElement, string const& text)  override  { _i_.markError(uiElement.getHash().get(), cStr(text)); }
+      void markNote  (ID uiElement, string const& text)  override  { _i_.markNote (uiElement.getHash().get(), cStr(text)); }
+      void mutate (ID uiElement, DiffMessage& diff)      override  { _i_.mutate   (uiElement.getHash().get(), &diff);      }
+      void triggerGuiShutdown (string const& cause)      override  { _i_.triggerGuiShutdown (cStr(cause));                 }
       
       
     public:
diff --git a/src/gui/notification-service.cpp b/src/gui/notification-service.cpp
index 90b873943..82435b941 100644
--- a/src/gui/notification-service.cpp
+++ b/src/gui/notification-service.cpp
@@ -87,7 +87,7 @@ namespace gui {
   
   
   void 
-  NotificationService::displayInfo (string const& text)
+  NotificationService::displayInfo (NotifyLevel severity, string const& text)
   {
     INFO (gui, "@GUI: display '%s' as notification message.", cStr(text));  ///////////////////////////////////TICKET #1102 : build a message display box in the UI
     ////////////////////////TODO actually push the information to the GUI   ///////////////////////////////////TICKET #1098 : use a suitable Dispatcher
@@ -215,11 +215,11 @@ namespace gui {
                                , NULL /* on  open  */
                                , NULL /* on  close */
                                , LUMIERA_INTERFACE_INLINE (displayInfo,
-                                                           void, (const char* text),
+                                                           void, (uint severity, const char* text),
                                                              {
                                                                if (!_instance) lumiera_error_set(LUMIERA_ERROR_FACADE_LIFECYCLE, text);
                                                                else
-                                                                 _instance->displayInfo (text);
+                                                                 _instance->displayInfo (NotifyLevel(severity), text);
                                                              }
                                                           )
                                , LUMIERA_INTERFACE_INLINE (markError,
diff --git a/src/gui/notification-service.hpp b/src/gui/notification-service.hpp
index 1f7c1d3f1..55759ace7 100644
--- a/src/gui/notification-service.hpp
+++ b/src/gui/notification-service.hpp
@@ -80,7 +80,7 @@ namespace gui {
       
       /* === Implementation of the Facade Interface === */
       
-      void displayInfo (string const& text)             override;
+      void displayInfo (NotifyLevel,string const& text) override;
       void markError (ID uiElement, string const& text) override;
       void markNote  (ID uiElement, string const& text) override;
       void mutate (ID uiElement, DiffMessage&)          override;      ////////////////////////////////////////TICKET #1066 : how to pass a diff message
diff --git a/src/include/gui-notification-facade.h b/src/include/gui-notification-facade.h
index 05dd898dc..976850aac 100644
--- a/src/include/gui-notification-facade.h
+++ b/src/include/gui-notification-facade.h
@@ -57,6 +57,12 @@ namespace gui {
   
   using ID = lib::idi::BareEntryID const&;
   
+  enum NotifyLevel {
+      NOTE_INFO,   ///< possibly interesting info that can be safely ignored
+      NOTE_WARN,   ///< something to be aware of, to be indicated unobtrusively
+      NOTE_ERROR   ///< severe condition to be indicated prominently
+  };
+  
   
   /*****************************************************************//**
    * Global access point to push state update and notification of events
@@ -75,7 +81,7 @@ namespace gui {
       
       
       /** push a user visible notification text */
-      virtual void displayInfo (string const& text)              =0;
+      virtual void displayInfo (NotifyLevel, string const& text) =0;
       
       /** highlight an element in the UI as problem location */
       virtual void markError (ID uiElement, string const& text)  =0;
@@ -121,7 +127,7 @@ extern "C" {
 
 
 LUMIERA_INTERFACE_DECLARE (lumieraorg_GuiNotification, 0,
-                           LUMIERA_INTERFACE_SLOT (void, displayInfo,        (const char*)),
+                           LUMIERA_INTERFACE_SLOT (void, displayInfo,        (uint, const char*)),
                            LUMIERA_INTERFACE_SLOT (void, markError,          (LumieraUid, const char*)),
                            LUMIERA_INTERFACE_SLOT (void, markNote,           (LumieraUid, const char*)),
                            LUMIERA_INTERFACE_SLOT (void, mutate,             (LumieraUid, void*)),