diff --git a/src/proc/mobject/session/lifecycle-advisor.hpp b/src/proc/mobject/session/lifecycle-advisor.hpp
index ba6301a5d..b595273f2 100644
--- a/src/proc/mobject/session/lifecycle-advisor.hpp
+++ b/src/proc/mobject/session/lifecycle-advisor.hpp
@@ -128,6 +128,54 @@ namespace session {
         {
           lumiera::LifecycleHook::trigger (eventLabel);
         }
+      
+      
+      /**
+       * 
+       */
+      virtual void createSessionFacilities()   =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void injectSessionContent()      =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void getSessionReady()           =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void openSessionInterface()      =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void closeSessionInterface()     =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void disconnectRenderProcesses() =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void commandLogCheckpoint()      =0;
+      
+      
+      /**
+       * 
+       */
+      virtual void deconfigure()               =0;
     };
   
   
diff --git a/src/proc/mobject/session/sess-manager-impl.cpp b/src/proc/mobject/session/sess-manager-impl.cpp
index 426a1a5bd..123f83ac5 100644
--- a/src/proc/mobject/session/sess-manager-impl.cpp
+++ b/src/proc/mobject/session/sess-manager-impl.cpp
@@ -80,6 +80,10 @@ namespace session {
   
   
   
+  
+  
+  
+  
   namespace { // defining details of the Session Lifecycle
     
     typedef scoped_ptr<SessionImplAPI> SessionPImpl;
@@ -90,6 +94,65 @@ namespace session {
         SessionPImpl & session_;
         
         
+        
+        void
+        createSessionFacilities()
+          {
+            UNIMPLEMENTED ("create session implementation objects, pImpl switch");
+          }
+        
+        
+        void
+        injectSessionContent()
+          {
+            UNIMPLEMENTED ("load default content of de-serialise");
+          }
+        
+        
+        void
+        getSessionReady()
+          {
+            UNIMPLEMENTED ("any wiring and configuration to get the session ready");
+          }
+        
+        
+        void
+        openSessionInterface()
+          {
+            UNIMPLEMENTED ("open layer separation interface");
+          }
+        
+        
+        void
+        closeSessionInterface()
+          {
+            UNIMPLEMENTED ("shut down layer separation interface");
+          }
+        
+        
+        void
+        disconnectRenderProcesses()
+          {
+            UNIMPLEMENTED ("halt rendering");
+          }
+        
+        
+        void
+        commandLogCheckpoint()
+          {
+            UNIMPLEMENTED ("tag command log");
+          }
+        
+        
+        void
+        deconfigure()
+          {
+            UNIMPLEMENTED ("anything berfore destroying objects");
+          }
+        
+        
+        
+        
       public:
         SessionLifecycleDetails(SessionPImpl& currentSessionAccessPoint)
           : session_(currentSessionAccessPoint)