diff --git a/tests/vault/gear/scheduler-activity-test.cpp b/tests/vault/gear/scheduler-activity-test.cpp
index 29c29d9d8..6f797282b 100644
--- a/tests/vault/gear/scheduler-activity-test.cpp
+++ b/tests/vault/gear/scheduler-activity-test.cpp
@@ -68,9 +68,10 @@ namespace test {
         {
           simpleUsage();
           
-          verifyActivity_Invoke();
-          verifyActivity_Notify();
           verifyActivity_Post();
+          verifyActivity_Invoke();
+          verifyActivity_Notify_activate();
+          verifyActivity_Notify_dispatch();
           verifyActivity_Gate();
           
           termBuilder();
@@ -81,18 +82,52 @@ namespace test {
         }
       
       
-      /** @test TODO demonstrate a simple usage scenario
-       * @todo WIP 7/23 🔁 define 🔁 implement
-       */
+      /** @test demonstrate simple Activity usage */
       void
       simpleUsage()
         {
           // Activities are »POD with constructor«
-          Activity gate{5, Time{FSecs{3,2}}};
-          CHECK (gate.verb_ == Activity::GATE);
-          CHECK (gate.next == nullptr);
-          CHECK (gate.data_.condition.rest == 5);
-          CHECK (gate.data_.condition.dead == Time(500,1));
+          Activity start{Activity::WORKSTART};
+          CHECK (start.verb_ == Activity::WORKSTART);
+          CHECK (start.next  == nullptr);
+          CHECK (start.data_.timing.instant == Time::NEVER);       //////////////////////////////////////////TICKET #1317 : the purpose of this time data is not clear yet
+          CHECK (start.data_.timing.quality == 0);
+          
+          // use the ActivityDetector for test instrumentation...
+          ActivityDetector detector;
+          
+          // Activities can be invoked within an ExecutionContext
+          Time now = RealClock::now();
+          start.activate (now, detector.executionCtx);
+          
+          // In this case, activation causes invocation of λ-work on the context
+          CHECK (detector.verifyInvocation("CTX-work").arg(now, 0));
+          
+//        cout << detector.showLog()<<endl; // HINT: use this for investigation...
+        }
+      
+      
+      
+      /** @test behaviour of Activity::POST
+       * @todo WIP 8/23 🔁 define ⟶ implement
+       */
+      void
+      verifyActivity_Post()
+        {
+          Activity chain;
+          Activity post{Time{0,11}, Time{0,22}, &chain};
+          CHECK (Activity::TICK == chain.verb_);
+          CHECK (Activity::POST == post.verb_);
+          CHECK (Time(0,11) == post.data_.timeWindow.life);
+          CHECK (Time(0,22) == post.data_.timeWindow.dead);
+          CHECK ( & chain   == post.next);
+          
+          ActivityDetector detector;
+          Time tt{11,11};
+          post.activate (tt, detector.executionCtx);
+          
+          cout << detector.showLog() <<endl;
+          CHECK (detector.verifyInvocation("CTX-post").arg("11.011", "Act(TICK", "≺test::CTX≻"));   ///////////////////OOO need somehow to transport the time window...
         }
       
       
@@ -117,31 +152,46 @@ namespace test {
           Time realTime = RealClock::now();
           CHECK (activity::PASS == invoke.activate (realTime, detector.executionCtx));
           
-          cout << detector.showLog()<<endl;
           CHECK (detector.verifyInvocation ("job").arg(nomTime, x1));
         }
       
       
       
       /** @test TODO behaviour of Activity::NOTIFY
-       *        - notification entails to schedule a follow-up activation
-       *        - implies to pass the `next`-Activity to the execution context's `post()` hook
-       *        - use the rigged execution context from ActivityDetector to detect call
-       * @todo WIP 7/23 🔁 define ⟶ implement
+       *        - notification is dispatched as special message to an indicated target Activity
+       *        - when activated, a `NOTIFY`-Activity _posts itself_ through the Execution Context hook
+       *        - this way, further processing will happen in management mode (single threaded)
+       * @todo WIP 8/23 🔁 define ⟶ implement
        */
       void
-      verifyActivity_Notify()
+      verifyActivity_Notify_activate()
         {
+          Activity chain;
+          Activity notify{&chain};
+          
+          ActivityDetector detector;
+          Time tt{111,11};
+          notify.activate (tt, detector.executionCtx);
+          cout << detector.showLog() <<endl;
         }
       
       
       
       /** @test TODO behaviour of Activity::NOTIFY
-       * @todo WIP 7/23 ⟶ define ⟶ implement
+       *        - when _posting_ a `NOTIFY`, a dedicated _notification_ function is invoked on the chain
+       *        - what actually happens then depends on the receiver; here we just activate a test-Tap
+       * @todo WIP 8/23 🔁 define ⟶ implement
        */
       void
-      verifyActivity_Post()
+      verifyActivity_Notify_dispatch()
         {
+          ActivityDetector detector;
+          
+          Activity notify{detector.buildActivationProbe("targetActivity")};
+          
+          Time tt{111,11};
+          notify.dispatch (tt, detector.executionCtx);
+          cout << detector.showLog() <<endl;
         }
       
       
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index b89430de6..9e340c070 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -78049,16 +78049,16 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 <node CREATED="1688599961752" ID="ID_1476155017" MODIFIED="1688599964244" TEXT="invoke">
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1688599981240" ID="ID_1605268671" MODIFIED="1688601467122" TEXT="Job-Daten">
+<node COLOR="#435e98" CREATED="1688599981240" ID="ID_1605268671" MODIFIED="1692718372350" TEXT="Job-Daten">
 <arrowlink COLOR="#dd7f91" DESTINATION="ID_1404753000" ENDARROW="Default" ENDINCLINATION="1062;104;" ID="Arrow_ID_153253143" STARTARROW="None" STARTINCLINATION="779;-154;"/>
-<icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1688601470768" HGAP="39" ID="ID_973557978" MODIFIED="1688602978000" TEXT="leider ziemlich viel Daten" VSHIFT="17">
+<icon BUILTIN="info"/>
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1688601470768" HGAP="39" ID="ID_973557978" MODIFIED="1692718363232" TEXT="leider ziemlich viel Daten" VSHIFT="17">
 <icon BUILTIN="messagebox_warning"/>
 <node CREATED="1688601569851" ID="ID_567583834" MODIFIED="1688601591196" TEXT="Ptr + Time + LUID + 2*size_t"/>
 <node CREATED="1688601604198" ID="ID_1026682492" MODIFIED="1688601662698" TEXT="&#x27f9; 3 &#xbb;slots&#xab; + 3*64bit"/>
 </node>
-<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1688602957054" HGAP="59" ID="ID_1822229878" MODIFIED="1688602975417" TEXT="in mehrere Pakete aufteilen">
-<icon BUILTIN="flag-pink"/>
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1688602957054" HGAP="59" ID="ID_1822229878" MODIFIED="1692718359872" TEXT="in mehrere Pakete aufteilen">
+<icon BUILTIN="yes"/>
 <node CREATED="1688693404561" ID="ID_208511888" MODIFIED="1688693412610" TEXT="INVOCATION + 2 * FEED"/>
 </node>
 </node>
@@ -79495,8 +79495,8 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <node CREATED="1689200449333" ID="ID_386403564" MODIFIED="1689200453433" TEXT="usage scenarios"/>
 </node>
 <node CREATED="1689201354393" HGAP="24" ID="ID_1250518280" MODIFIED="1689201365333" TEXT="Hilfsmittel" VSHIFT="2">
-<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1689201660559" ID="ID_747497995" MODIFIED="1692057369715" TEXT="ActivityDetector">
-<icon BUILTIN="pencil"/>
+<node COLOR="#338800" CREATED="1689201660559" ID="ID_747497995" MODIFIED="1692718533422" TEXT="ActivityDetector">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1689201667734" ID="ID_901153159" MODIFIED="1692286015665" TEXT="speziell verdrahtetes Setup">
 <icon BUILTIN="info"/>
 <node CREATED="1689201677836" ID="ID_166879509" MODIFIED="1689201693231" TEXT="kann ihre Aktivierung dokumentieren"/>
@@ -79533,20 +79533,29 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 <node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1689199381509" HGAP="-9" ID="ID_1023579954" MODIFIED="1689200613367" TEXT="Testf&#xe4;lle" VSHIFT="4">
 <icon BUILTIN="list"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1689199958807" ID="ID_1659400931" MODIFIED="1689200471838" TEXT="simpleUsage">
-<icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1689201241256" ID="ID_1940651320" MODIFIED="1689201264958" TEXT="Activity platzieren">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1689199958807" ID="ID_1659400931" MODIFIED="1692718525119" TEXT="simpleUsage">
+<icon BUILTIN="button_ok"/>
+<node COLOR="#338800" CREATED="1689201241256" ID="ID_1940651320" MODIFIED="1692718523457" TEXT="Activity erstellen">
+<icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1689201251263" ID="ID_629522642" MODIFIED="1689201264958" TEXT="Epoche terminieren">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1689201251263" ID="ID_629522642" MODIFIED="1692718524329" TEXT="Activity aktivieren">
+<icon BUILTIN="button_ok"/>
+</node>
+</node>
+<node COLOR="#338800" CREATED="1692718407577" ID="ID_500127760" MODIFIED="1692718464799" TEXT="verifyActivity_Post">
+<icon BUILTIN="button_ok"/>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1692718467475" HGAP="25" ID="ID_1128481830" MODIFIED="1692718501944" TEXT="POST mu&#xdf; die Zeitfenster-Info transportieren" VSHIFT="5">
+<icon BUILTIN="broken-line"/>
 </node>
 </node>
 <node COLOR="#338800" CREATED="1689199390484" ID="ID_176395611" MODIFIED="1692369867056" TEXT="verifyActivity_Invoke">
 <icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1689199390484" ID="ID_1274424925" MODIFIED="1689200512352" TEXT="verifyActivity_Notify">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1689199390484" ID="ID_1274424925" MODIFIED="1692718461523" TEXT="verifyActivity_Notify_activate">
+<icon BUILTIN="pencil"/>
+</node>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1692718437941" ID="ID_1363192893" MODIFIED="1692718461522" TEXT="verifyActivity_Notify_dispatch">
+<icon BUILTIN="pencil"/>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1689199390484" ID="ID_212018049" MODIFIED="1692544359039" TEXT="verifyActivity_Gate">
 <linktarget COLOR="#2c8d69" DESTINATION="ID_212018049" ENDARROW="Default" ENDINCLINATION="556;74;" ID="Arrow_ID_1693904148" SOURCE="ID_1220469732" STARTARROW="None" STARTINCLINATION="472;34;"/>