diff --git a/tests/stage/model/zoom-window-test.cpp b/tests/stage/model/zoom-window-test.cpp
index 3a900c7f7..aacf8407c 100644
--- a/tests/stage/model/zoom-window-test.cpp
+++ b/tests/stage/model/zoom-window-test.cpp
@@ -29,7 +29,11 @@
 #include "lib/test/test-helper.hpp"
 #include "stage/model/zoom-window.hpp"
 #include "lib/format-cout.hpp"//////////////TODO
-
+#define SHOW_TYPE(_TY_) \
+    cout << "typeof( " << STRINGIFY(_TY_) << " )= " << lib::meta::typeStr<_TY_>() <<endl;
+#define SHOW_EXPR(_XX_) \
+    cout << "#Probe# " << STRINGIFY(_XX_) << " ? = " << _XX_ <<endl;
+//////////////////////////////////////////////////////////////////////////////TODO
 
 
 namespace stage{
@@ -261,12 +265,13 @@ namespace test {
 
           win.calibrateExtension(1280);
           CHECK (win.visible().duration() == TimeValue(1280));
+          CHECK (win.visible().duration() == Duration{1280*MICRO_TICK});
           CHECK (win.px_per_sec()  == ZOOM_MAX_RESOLUTION / 2);
           CHECK (win.pxWidth()     == 1280);
           CHECK (win.overallSpan() == TimeSpan(_t(0), _t(64)));
           
           win.nudgeMetric(-5);
-          CHECK (win.visible().duration() == Duration{32 * FSecs(1280/Time::SCALE)});
+          CHECK (win.visible().duration() == Duration{32 * 1280*MICRO_TICK});
           CHECK (win.px_per_sec()  == ZOOM_MAX_RESOLUTION / 64);
           CHECK (win.pxWidth()     == 1280);
           CHECK (win.overallSpan() == TimeSpan(_t(0), _t(64)));
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 0c467cd5a..b0c42a315 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -39377,10 +39377,12 @@
 <node COLOR="#338800" CREATED="1667517299247" ID="ID_1450395718" MODIFIED="1667960483442" TEXT="kleinstm&#xf6;gliches window &#x2259; 1 &#xb5;-Tick">
 <icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1667517317821" ID="ID_1713703867" MODIFIED="1667960499368" TEXT="weitest m&#xf6;glicher zoom-out &#x2259; Canvas-size">
-<icon BUILTIN="broken-line"/>
+<node COLOR="#338800" CREATED="1667517317821" ID="ID_1713703867" MODIFIED="1668110364974" TEXT="weitest m&#xf6;glicher zoom-out &#x2259; Canvas-size">
+<icon BUILTIN="button_ok"/>
+</node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1667517346296" ID="ID_1169099153" MODIFIED="1668110372098" TEXT="aber: kann Canvas per reverse-Zoom expandieren">
+<icon BUILTIN="flag-yellow"/>
 </node>
-<node CREATED="1667517346296" ID="ID_1169099153" MODIFIED="1667517356781" TEXT="aber: kann Canvas per reverse-Zoom expandieren"/>
 </node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1667318726445" ID="ID_1535955412" MODIFIED="1667318747575" TEXT="visibleRange setzen">