diff --git a/tests/16parameter.tests b/tests/16parameter.tests
index 4eeef4a77..0d82402f0 100644
--- a/tests/16parameter.tests
+++ b/tests/16parameter.tests
@@ -15,3 +15,8 @@ END
 PLANNED "Parameter Provision" ParameterProvision_test << END
 return: 0
 END
+
+
+PLANNED "Parameter value scales" ParameterScale_test << END
+return: 0
+END
diff --git a/tests/lib/par/parameter-scale-test.cpp b/tests/lib/par/parameter-scale-test.cpp
new file mode 100644
index 000000000..9de75e9bd
--- /dev/null
+++ b/tests/lib/par/parameter-scale-test.cpp
@@ -0,0 +1,87 @@
+/*
+  ParameterScale(Test)  -  verify parameter value scales
+
+   Copyright (C)
+     2026,            Hermann Vosseler <Ichthyostega@web.de>
+
+  **Lumiera** is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version. See the file COPYING for further details.
+
+* *****************************************************************/
+
+/** @file parameter-test.cpp
+ ** unit test \ref ParameterScale_test
+ */
+
+
+#include "test/run.hpp"
+//#include "test/test-helper.hpp"
+#include "lib/par/parameter.hpp"
+#include "test/diagnostic-output.hpp"/////////////TODO
+
+//#include <utility>
+//#include <string>
+//#include <vector>
+
+//using std::string;
+//using std::vector;
+//using std::swap;
+
+
+namespace lib {
+namespace par {
+namespace test{
+  
+//  using lumiera::error::LUMIERA_ERROR_LOGIC;
+  
+  namespace {//Test fixture....
+    
+  }//(End)Test fixture
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  /**************************************************************************//**
+   * @test cover properties of generic parameter containers.
+   */
+  class ParameterScale_test : public Test
+    {
+      
+      virtual void
+      run (Arg)
+        {
+          simpleUsage();
+          verify_typeMarker();
+        }
+      
+      
+      void
+      simpleUsage()
+        {
+          UNIMPLEMENTED ("nebbich");
+        }
+      
+      
+      /** @test
+       * @todo WIP 9/26 🔁 define ⟶ implement
+       */
+      void
+      verify_typeMarker()
+        {
+        }
+    };
+  
+  
+  /** Register this test class... */
+  LAUNCHER (ParameterScale_test, "unit lib");
+  
+  
+  
+}}} // namespace lib::par::test
diff --git a/tests/lib/par/parameter-test.cpp b/tests/lib/par/parameter-test.cpp
index 34cd13248..e82323d30 100644
--- a/tests/lib/par/parameter-test.cpp
+++ b/tests/lib/par/parameter-test.cpp
@@ -58,7 +58,10 @@ namespace test{
       run (Arg)
         {
           simpleUsage();
-          verify_typeMarker();
+          verify_Builder();
+          verify_Identity();
+          verify_ParamType();
+          verify_Automation();
         }
       
       
@@ -79,8 +82,38 @@ namespace test{
         }
       
       
+      /** @test
+       * @todo WIP 9/26 🔁 define ⟶ implement
+       */
       void
-      verify_typeMarker()
+      verify_Builder()
+        {
+        }
+      
+      
+      /** @test
+       * @todo WIP 9/26 🔁 define ⟶ implement
+       */
+      void
+      verify_Identity()
+        {
+        }
+      
+      
+      /** @test
+       * @todo WIP 9/26 🔁 define ⟶ implement
+       */
+      void
+      verify_ParamType()
+        {
+        }
+      
+      
+      /** @test
+       * @todo WIP 9/26 🔁 define ⟶ implement
+       */
+      void
+      verify_Automation()
         {
         }
     };
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index c13acc982..fda8c71ce 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -85246,6 +85246,18 @@
 <node BACKGROUND_COLOR="#174956" COLOR="#8dfd49" CREATED="1788313090668" ID="ID_684424843" MODIFIED="1788313179645" STYLE="bubble" TEXT="erster einfachster Testfall GR&#xdc;N">
 <edge COLOR="#61fe5b" STYLE="bezier" WIDTH="thin"/>
 </node>
+<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1788651832213" ID="ID_820925379" MODIFIED="1788651847845" TEXT="verify_Builder">
+<icon BUILTIN="hourglass"/>
+</node>
+<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1788651832214" ID="ID_613414026" MODIFIED="1788651847846" TEXT="verify_Identity">
+<icon BUILTIN="hourglass"/>
+</node>
+<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1788651832214" ID="ID_11918736" MODIFIED="1788651847848" TEXT="verify_ParamType">
+<icon BUILTIN="hourglass"/>
+</node>
+<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1788651832214" ID="ID_1525078992" MODIFIED="1788651847850" TEXT="verify_Automation">
+<icon BUILTIN="hourglass"/>
+</node>
 </node>
 </node>
 </node>
@@ -85253,9 +85265,15 @@
 </node>
 <node CREATED="1783093092796" ID="ID_1726265613" MODIFIED="1783093108821" TEXT="intendierte Verwendung">
 <node CREATED="1783093125033" ID="ID_1254949400" MODIFIED="1783093128185" TEXT="use-cases">
-<node CREATED="1783093317856" ID="ID_856771096" MODIFIED="1783093324150" TEXT="get&lt;TY&gt;()"/>
-<node CREATED="1783093436187" ID="ID_136990462" MODIFIED="1783093443517" TEXT="set(TY newVal)"/>
-<node CREATED="1783093767301" ID="ID_1335018454" MODIFIED="1783093803789" TEXT="Param::build&lt;TY&gt;(val=TY{})"/>
+<node CREATED="1783093317856" ID="ID_856771096" MODIFIED="1788649816399" TEXT="getVal&lt;TY&gt;()"/>
+<node CREATED="1783093436187" ID="ID_136990462" MODIFIED="1788649820630" TEXT="setVall(TY newVal)"/>
+<node CREATED="1788649787926" ID="ID_1985200496" MODIFIED="1788649796938" TEXT="pull&lt;TY&gt;(Time)"/>
+<node CREATED="1788649742924" ID="ID_28367962" MODIFIED="1788649744457" TEXT="Builder">
+<node CREATED="1783093767301" ID="ID_1335018454" MODIFIED="1788649727203" TEXT="Parameter::forType&lt;TY&gt;()"/>
+<node CREATED="1788649685467" ID="ID_1301553785" MODIFIED="1788649723800" TEXT="Parameter::forValue(VAL&amp;&amp;)"/>
+<node CREATED="1788649712657" ID="ID_1615160500" MODIFIED="1788649741347" TEXT="parameter::from(prototype)"/>
+<node CREATED="1788650438807" ID="ID_563553509" MODIFIED="1788650446141" TEXT="Scale festlegen"/>
+</node>
 <node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1783093472793" ID="ID_1689475149" MODIFIED="1783093761099" TEXT="adjust (Control&lt;X&gt;)">
 <icon BUILTIN="hourglass"/>
 <node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1788570496914" HGAP="48" ID="ID_1707877834" MODIFIED="1788570548906" TEXT="was hab ich damit gemeint?? wohl einen Manipulator?" VSHIFT="4">