diff --git a/src/lib/typed-allocation-manager.hpp b/src/lib/typed-allocation-manager.hpp
index febfc8449..1a4887121 100644
--- a/src/lib/typed-allocation-manager.hpp
+++ b/src/lib/typed-allocation-manager.hpp
@@ -265,7 +265,8 @@ namespace lib {
       Slot<XX>
       allocateSlot ()
         {
-          TODO ("redirect to the corresponding pool allocator");
+          ////////////////////////////////////////////////TICKET #231 :redirect to the corresponding pool allocator
+          TRACE (memory, "allocate %s", util::tyStr<XX>().c_str());
           void* space = new char[sizeof(XX)];
           allocCnt_.inc<XX>();
           return Slot<XX> (this, space);
@@ -275,7 +276,8 @@ namespace lib {
       void
       releaseSlot (void* entry)
         {
-          TODO ("redirect to the corresponding pool allocator");
+          ////////////////////////////////////////////////TICKET #231 :redirect to the corresponding pool allocator
+          TRACE (memory, "release %s", util::tyStr<XX>().c_str());
           typedef char Storage[sizeof(XX)];
           delete[] reinterpret_cast<Storage*> (entry);
           allocCnt_.dec<XX>();
diff --git a/src/proc/control/command-registry.hpp b/src/proc/control/command-registry.hpp
index 83b2d57a6..b650e05d4 100644
--- a/src/proc/control/command-registry.hpp
+++ b/src/proc/control/command-registry.hpp
@@ -123,15 +123,25 @@ namespace control {
       typedef unordered_map<Symbol, Command, hash<Symbol> > CmdIndex;
       typedef map< const Command*, Symbol, order_by_impl> ReverseIndex;
       
+      TypedAllocationManager allocator_;
       CmdIndex index_;
       ReverseIndex ridx_;
-      TypedAllocationManager allocator_;
       
       
     public:
       static lib::Singleton<CommandRegistry> instance;
       
       
+     ~CommandRegistry()
+        {
+          INFO (command, "Shutting down Command system...");
+                                                                //////////////////////TICKET #295 : possibly remotely trigger Command mass suicide here....
+          ridx_.clear();
+          index_.clear();
+        }
+      
+      
+      
       /** register a command (Frontend) under the given ID
        *  @return either the new command, or an already existing
        *          command registered under the given ID  */ 
diff --git a/tests/45controller.tests b/tests/45controller.tests
index ec2cf9d47..86b76261e 100644
--- a/tests/45controller.tests
+++ b/tests/45controller.tests
@@ -3,7 +3,7 @@ TESTING "Component Test Suite: Proc-Layer controller" ./test-components --group=
 
 
 
-PLANNED "CommandBasic_test" CommandBasic_test <<END
+TEST "CommandBasic_test" CommandBasic_test <<END
 END
 
 
@@ -55,7 +55,7 @@ return: 0
 END
 
 
-PLANNED "Equality comparisons" CommandEquality_test <<END
+TEST "Equality comparisons" CommandEquality_test <<END
 return: 0
 END
 
diff --git a/tests/components/proc/control/command-basic-test.cpp b/tests/components/proc/control/command-basic-test.cpp
index 306f78b78..f75d2b81b 100644
--- a/tests/components/proc/control/command-basic-test.cpp
+++ b/tests/components/proc/control/command-basic-test.cpp
@@ -22,16 +22,13 @@
 
 
 #include "lib/test/run.hpp"
-#include "lib/test/test-helper.hpp"
 #include "proc/control/command-def.hpp"
 #include "lib/lumitime.hpp"
 #include "lib/p.hpp"
-//#include "lib/util.hpp"
 
 #include <cstdlib>
 
 using lumiera::Time;
-//using util::contains;
 using std::rand;
 
 
@@ -45,7 +42,7 @@ namespace test    {
   
   
   namespace  { // functions to be invoked through the command system
-  
+    
     void
     operate (P<Time> dummyObj, int randVal)
     {
@@ -73,6 +70,12 @@ namespace test    {
    *       Shows how to define a simple command inline and how to
    *       trigger execution and UNDO. Verifies the command action
    *       takes place and is reverted again by the UNDO function.
+   *       
+   * This is a simplified demonstration. Usually, commands would be defined
+   * in bulk and without specifying parameters. Later, typically client code
+   * accesses a handle by ID, binds to the concrete argument and dispatches
+   * the invocation. Note in this example that by using a smart-ptr as
+   * argument allows accessing an object by reference and late binding.
    * 
    * @see  control::Command
    * @see  control::CommandDef
@@ -111,6 +114,6 @@ namespace test    {
   
   /** Register this test class... */
   LAUNCHER (CommandBasic_test, "unit controller");
-      
-      
+  
+  
 }} // namespace control::test
diff --git a/tests/components/proc/control/command-registry-test.cpp b/tests/components/proc/control/command-registry-test.cpp
index 42afbc853..c92509fb3 100644
--- a/tests/components/proc/control/command-registry-test.cpp
+++ b/tests/components/proc/control/command-registry-test.cpp
@@ -119,8 +119,9 @@ namespace test    {
           
           // now create a clone, registered under a different ID
           Command cmd2 = cmd1.storeDef(TEST_CMD2);
-          ASSERT (cmd2 != cmd1);
+          ASSERT (cmd2 == cmd1);
           cmd2.bind(54321);
+          ASSERT (cmd2 != cmd1);
           
           // this created exactly one additional instance allocation:
           ASSERT (1+cnt_inst == registry.instance_count());
diff --git a/tests/components/proc/control/command-use1-test.cpp b/tests/components/proc/control/command-use1-test.cpp
index c7bcf4326..06ea9c7cf 100644
--- a/tests/components/proc/control/command-use1-test.cpp
+++ b/tests/components/proc/control/command-use1-test.cpp
@@ -23,15 +23,6 @@
 
 #include "lib/test/run.hpp"
 #include "lib/test/test-helper.hpp"
-//#include "proc/asset/media.hpp"
-//#include "proc/mobject/session.hpp"
-//#include "proc/mobject/session/edl.hpp"
-//#include "proc/mobject/session/testclip.hpp"
-//#include "proc/mobject/test-dummy-mobject.hpp"
-//#include "lib/p.hpp"
-//#include "proc/mobject/placement.hpp"
-//#include "proc/mobject/placement-index.hpp"
-//#include "proc/mobject/explicitplacement.hpp"
 #include "proc/control/command-invocation.hpp"
 #include "proc/control/command-def.hpp"
 //#include "lib/lumitime.hpp"
@@ -61,13 +52,8 @@ namespace test    {
   using util::isSameObject;
   using util::contains;
   using util::str;
-
-//  using session::test::TestClip;
-//  using lumiera::P;
   
   
-  //using lumiera::typelist::BuildTupleAccessor;
-  
   
   
   
@@ -161,8 +147,8 @@ namespace test    {
           ASSERT ( 1234 == command1::check_);
           
           // another shortcut, with static type check:
-          invoke (command1::operate) (5678);
-          ASSERT ( 1234+5678 == command1::check_);
+//        invoke (command1::operate) (5678);                                  //////////////////TICKET #291  : unimplemented for now (9/09)
+//        ASSERT ( 1234+5678 == command1::check_);
           
           com.undo();
           ASSERT ( 0 == command1::check_);
diff --git a/tests/components/proc/control/command-use2-test.cpp b/tests/components/proc/control/command-use2-test.cpp
index e8d217fd2..6a948c28e 100644
--- a/tests/components/proc/control/command-use2-test.cpp
+++ b/tests/components/proc/control/command-use2-test.cpp
@@ -23,15 +23,6 @@
 
 #include "lib/test/run.hpp"
 #include "lib/test/test-helper.hpp"
-//#include "proc/asset/media.hpp"
-//#include "proc/mobject/session.hpp"
-//#include "proc/mobject/session/edl.hpp"
-//#include "proc/mobject/session/testclip.hpp"
-//#include "proc/mobject/test-dummy-mobject.hpp"
-//#include "lib/p.hpp"
-//#include "proc/mobject/placement.hpp"
-//#include "proc/mobject/placement-index.hpp"
-//#include "proc/mobject/explicitplacement.hpp"
 #include "proc/control/command.hpp"
 #include "proc/control/command-def.hpp"
 #include "proc/control/handling-pattern.hpp"
@@ -68,12 +59,8 @@ namespace test    {
   using boost::lexical_cast;
   using util::contains;
   using boost::ref;
-
-//  using session::test::TestClip;
-//  using lumiera::P;
   
   
-  //using lumiera::typelist::BuildTupleAccessor;
   using lumiera::error::LUMIERA_ERROR_EXTERNAL;
   
   
diff --git a/tests/components/proc/control/command-use3-test.cpp b/tests/components/proc/control/command-use3-test.cpp
index 0ce985079..c69f1bb24 100644
--- a/tests/components/proc/control/command-use3-test.cpp
+++ b/tests/components/proc/control/command-use3-test.cpp
@@ -23,15 +23,6 @@
 
 #include "lib/test/run.hpp"
 #include "lib/test/test-helper.hpp"
-//#include "proc/asset/media.hpp"
-//#include "proc/mobject/session.hpp"
-//#include "proc/mobject/session/edl.hpp"
-//#include "proc/mobject/session/testclip.hpp"
-//#include "proc/mobject/test-dummy-mobject.hpp"
-//#include "lib/p.hpp"
-//#include "proc/mobject/placement.hpp"
-//#include "proc/mobject/placement-index.hpp"
-//#include "proc/mobject/explicitplacement.hpp"
 #include "proc/control/command-def.hpp"
 //#include "lib/lumitime.hpp"
 #include "lib/util.hpp"
@@ -63,13 +54,8 @@ namespace test    {
 //  using lib::test::showSizeof;
 //  using util::isSameObject;
 //  using util::contains;
-
-//  using session::test::TestClip;
-//  using lumiera::P;
   
   
-  //using lumiera::typelist::BuildTupleAccessor;
-//  using lumiera::error::LUMIERA_ERROR_EXTERNAL;