diff --git a/src/vault/gear/load-controller.hpp b/src/vault/gear/load-controller.hpp
index e70d2f5f5..14a977e47 100644
--- a/src/vault/gear/load-controller.hpp
+++ b/src/vault/gear/load-controller.hpp
@@ -95,6 +95,7 @@ namespace gear {
   
   using lib::time::Time;
   using lib::time::FSecs;
+  using lib::time::TimeVar;
   using lib::time::Offset;
   using lib::time::Duration;
   using std::chrono_literals::operator ""ms;
@@ -126,6 +127,8 @@ namespace gear {
     {
       BlockFlowAlloc& allocator_;
       
+      TimeVar tendedHead_{Time::ANYTIME};
+      
     public:
       explicit
       LoadController (BlockFlowAlloc& blockFlow)
@@ -134,18 +137,25 @@ namespace gear {
       
       
       /**
+       * did we already tend for the indicated next head time?
        * @note const and non-grooming
        */
       bool
-      tendedNext()  const
+      tendedNext (Time nextHead)  const
         {
-          UNIMPLEMENTED ("Predicate to determine if next foreseeable Activity was tended for");
+          return nextHead == tendedHead_;
         }
       
+      /**
+       * Mark the indicated next head time as tended.
+       * @remark while this is just implemented as simple state,
+       *   the meaning is that some free capacity has been directed
+       *   towards that time, and thus further capacity go elsewhere.
+       */
       void
-      tendNext()
+      tendNext (Time nextHead)
         {
-          UNIMPLEMENTED ("tend for the next foreseeable Activity");
+          tendedHead_ = nextHead;
         }
       
       enum
diff --git a/tests/vault/gear/scheduler-load-control-test.cpp b/tests/vault/gear/scheduler-load-control-test.cpp
index 4d4a14abc..b131e38e7 100644
--- a/tests/vault/gear/scheduler-load-control-test.cpp
+++ b/tests/vault/gear/scheduler-load-control-test.cpp
@@ -65,6 +65,7 @@ namespace test {
         {
            simpleUsage();
            classifyTimings();
+           tendNextActivity();
            walkingDeadline();
            setupLalup();
         }
@@ -94,9 +95,6 @@ namespace test {
       void
       classifyTimings()
         {
-          BlockFlowAlloc bFlow;
-          LoadController ctrl{bFlow};
-          
           Time next{0,10};
           
           Time ut{1,0};
@@ -121,6 +119,46 @@ namespace test {
       
       
       
+      /** @test verify the mark for _tended next head_ Activity.
+       * @todo WIP 10/23 ✔ define ⟶ ✔ implement
+       */
+      void
+      tendNextActivity()
+        {
+          BlockFlowAlloc bFlow;
+          LoadController lctrl{bFlow};
+          
+          Time t1{1,0};
+          Time t2{2,0};
+          Time t3{3,0};
+          
+          CHECK (not lctrl.tendedNext (t2));
+          
+          lctrl.tendNext (t2);
+          CHECK (    lctrl.tendedNext (t2));
+          CHECK (not lctrl.tendedNext (t3));
+          
+          lctrl.tendNext (t3);
+          CHECK (    lctrl.tendedNext (t3));
+          
+          // However — this is not a history memory...
+          CHECK (not lctrl.tendedNext (t1));
+          CHECK (not lctrl.tendedNext (t2));
+          CHECK (    lctrl.tendedNext (t3));
+          
+          lctrl.tendNext (t1);
+          CHECK (    lctrl.tendedNext (t1));
+          CHECK (not lctrl.tendedNext (t2));
+          CHECK (not lctrl.tendedNext (t3));
+          
+          lctrl.tendNext (t2);
+          CHECK (not lctrl.tendedNext (t1));
+          CHECK (    lctrl.tendedNext (t2));
+          CHECK (not lctrl.tendedNext (t3));
+        }
+      
+      
+      
       /** @test TODO
        * @todo WIP 10/23 🔁 define ⟶ implement
        */
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index c2f57bc88..495994ff6 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -82507,95 +82507,83 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697982455236" ID="ID_645321047" MODIFIED="1697982460315" TEXT="Schemata">
 <icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697982678423" ID="ID_77969589" MODIFIED="1697983174220" TEXT="tendNext">
-<icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697982717584" ID="ID_267473149" MODIFIED="1697983179411" TEXT="Pr&#xfc;f-Pr&#xe4;dikat: tendedNext()">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1697982678423" ID="ID_77969589" MODIFIED="1698072830497" TEXT="tendNext">
+<icon BUILTIN="button_ok"/>
+<node COLOR="#338800" CREATED="1697982717584" ID="ID_267473149" MODIFIED="1698072831864" TEXT="Pr&#xfc;f-Pr&#xe4;dikat: tendedNext()">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1697982757371" ID="ID_1084006128" MODIFIED="1697983275515" TEXT="const und non-grooming"/>
 <node CREATED="1697983183366" ID="ID_1016039063" MODIFIED="1697983192701" TEXT="Zugriff auf headTime und Vergleich"/>
 </node>
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1698072777599" ID="ID_1136303368" MODIFIED="1698072828208" TEXT="Implementierung ist KISS">
+<icon BUILTIN="messagebox_warning"/>
+<node CREATED="1698072785109" ID="ID_110633840" MODIFIED="1698072792145" TEXT="semantisch w&#xfc;rde man sich eine Historie erwarten"/>
+<node CREATED="1698072792645" ID="ID_1751412844" MODIFIED="1698072822477" TEXT="aber zusammen mit der Priority-Queue ergibt sich eine sinnvolle Heuristik"/>
+</node>
 </node>
 <node COLOR="#338800" CREATED="1697983155214" ID="ID_1677472042" MODIFIED="1698026637409" TEXT="classifyCapacity">
+<arrowlink COLOR="#378f79" DESTINATION="ID_982468485" ENDARROW="Default" ENDINCLINATION="-84;-47;" ID="Arrow_ID_902782295" STARTARROW="None" STARTINCLINATION="31;94;"/>
 <icon BUILTIN="button_ok"/>
 <node COLOR="#435e98" CREATED="1697985093803" ID="ID_1553570724" MODIFIED="1698019118162" TEXT="Enum">
 <icon BUILTIN="info"/>
 <node CREATED="1698019031467" ID="ID_341356297" MODIFIED="1698019058561" TEXT="DISPATCH">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       sent to work
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1698019039597" ID="ID_1951145257" MODIFIED="1698019068575" TEXT="TENDNEXT">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       reserved for next task
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1697985096625" ID="ID_1387570892" MODIFIED="1698019077986" TEXT="SPINTIME">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       awaiting imminent activities
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1697985096625" ID="ID_1218749290" MODIFIED="1698019089902" TEXT="NEARTIME">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       capacity for active processing required
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1697985096625" ID="ID_1654025176" MODIFIED="1698019099614" TEXT="WORKTIME">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       typical stable work task rhythm expected
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1697985096625" ID="ID_196379275" MODIFIED="1698019109349" TEXT="IDLETIME">
 <richcontent TYPE="NOTE"><html>
-  <head>
-    
-  </head>
+  <head/>
   <body>
     <p>
       time to go to sleep
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 </node>
 <node COLOR="#435e98" CREATED="1698020940647" ID="ID_307944005" MODIFIED="1698026622294" TEXT="Konfig-Konstanten">
@@ -82632,14 +82620,16 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <arrowlink COLOR="#7779a3" DESTINATION="ID_492054934" ENDARROW="Default" ENDINCLINATION="-814;62;" ID="Arrow_ID_817672667" STARTARROW="None" STARTINCLINATION="1393;-112;"/>
 <icon BUILTIN="flag-yellow"/>
 <node CREATED="1698019149574" HGAP="40" ID="ID_982468485" MODIFIED="1698019158970" TEXT="Fallunterscheidung" VSHIFT="21">
+<linktarget COLOR="#378f79" DESTINATION="ID_982468485" ENDARROW="Default" ENDINCLINATION="-84;-47;" ID="Arrow_ID_902782295" SOURCE="ID_1677472042" STARTARROW="None" STARTINCLINATION="31;94;"/>
 <node CREATED="1698019164588" ID="ID_1369255451" MODIFIED="1698019165160" TEXT="incomingCapacity"/>
 <node CREATED="1698019170228" ID="ID_311501577" MODIFIED="1698019170871" TEXT="outgoingCapacity"/>
 </node>
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697982436029" ID="ID_288711039" MODIFIED="1697982440270" TEXT="Test">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1697982436029" ID="ID_288711039" MODIFIED="1698073045501" TEXT="Test">
+<arrowlink COLOR="#56a5a9" DESTINATION="ID_488605324" ENDARROW="Default" ENDINCLINATION="457;-68;" ID="Arrow_ID_1794430254" STARTARROW="None" STARTINCLINATION="-752;0;"/>
+<icon BUILTIN="pencil"/>
 </node>
 </node>
 </node>
@@ -87575,6 +87565,21 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1698072872306" ID="ID_488605324" MODIFIED="1698073045501" TEXT="SchedulerLoadControl_test">
+<linktarget COLOR="#56a5a9" DESTINATION="ID_488605324" ENDARROW="Default" ENDINCLINATION="457;-68;" ID="Arrow_ID_1794430254" SOURCE="ID_288711039" STARTARROW="None" STARTINCLINATION="-752;0;"/>
+<icon BUILTIN="pencil"/>
+<node CREATED="1698072995729" ID="ID_130445310" MODIFIED="1698073015042" TEXT="Implementierungs-Details der Load-Control-Mechanismen">
+<icon BUILTIN="info"/>
+</node>
+<node CREATED="1698073016039" ID="ID_1742616307" MODIFIED="1698073017507" TEXT="F&#xe4;lle">
+<node COLOR="#338800" CREATED="1698073017869" ID="ID_916925082" MODIFIED="1698073034749" TEXT="classifyTimings">
+<icon BUILTIN="button_ok"/>
+</node>
+<node COLOR="#338800" CREATED="1698073022938" ID="ID_1539653684" MODIFIED="1698073034749" TEXT="tendNextActivity">
+<icon BUILTIN="button_ok"/>
+</node>
+</node>
+</node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1688336835085" ID="ID_1753236898" MODIFIED="1697732777759" TEXT="SchedulerService_test">
 <linktarget COLOR="#678999" DESTINATION="ID_1753236898" ENDARROW="Default" ENDINCLINATION="-719;-67;" ID="Arrow_ID_197736729" SOURCE="ID_862845398" STARTARROW="None" STARTINCLINATION="-295;159;"/>
 <icon BUILTIN="flag-yellow"/>