diff --git a/src/lib/gnuplot-gen.cpp b/src/lib/gnuplot-gen.cpp
index ce88e5ce8..cc0f6e642 100644
--- a/src/lib/gnuplot-gen.cpp
+++ b/src/lib/gnuplot-gen.cpp
@@ -153,11 +153,12 @@ if (plots > 1) {
     unset arrow 10
     unset arrow 11
     set border 2+8
+    set key bmargin
 
 ${if Y2range}
     set yrange [${Y2range}]
 ${endif
-}    unset x2label
+}    unset xlabel
     set format x ""
 ${if Y2label
 }    set ylabel '${Y2label}' ${endif
diff --git a/tests/library/gnuplot-gen-test.cpp b/tests/library/gnuplot-gen-test.cpp
index b48f8c9fc..0654f8c5d 100644
--- a/tests/library/gnuplot-gen-test.cpp
+++ b/tests/library/gnuplot-gen-test.cpp
@@ -115,7 +115,7 @@ namespace test{
                       ,{6,13}
                       ,{7,21.55}
                      }});
-          cout << gnuplot <<endl;
+//        cout << gnuplot <<endl;
           
           CHECK (contains (gnuplot, "\"step\",\"fib\""));
           CHECK (contains (gnuplot, "7,21.55"));
@@ -123,8 +123,24 @@ namespace test{
           CHECK (contains (gnuplot, "set arrow 1 from graph 0, first regLine(STATS_min_x)"));
           CHECK (contains (gnuplot, "plot $RunData using 1:2 with points"));
           
-          // only one data row given => no multiplot layout
-          CHECK (not contains (gnuplot, "set multiplot"));
+          
+          gnuplot = gnuplot_gen::scatterRegression(
+              CSVData{{"step","fib","one","two","three"}
+                     ,{{0,1 , 1.0, 170,200}
+                      ,{1,1 , 0.1, 160,210}
+                      ,{2,2 , 1.1, 150,220}
+                      ,{3,3 , 0.0, "" ,230}
+                      ,{4,5 , 1.1, 130,240}
+                      ,{5,8 , 1.2, 120,250}
+                      ,{6,13, 1.3, 110    }
+                      ,{7,21, 1.4, 100    }
+                     }});
+          cout << gnuplot <<endl;
+          
+          // more than one data row given => using multiplot layout
+          CHECK (contains (gnuplot, "set multiplot"));
+          CHECK (contains (gnuplot, "\"step\",\"fib\",\"one\",\"two\",\"three\""));
+          CHECK (contains (gnuplot, "0,1,1,170,200"));
         }
       
       
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index d8afb7f25..b14c24bf1 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -112386,8 +112386,8 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710079820663" ID="ID_346209836" MODIFIED="1710079838390" TEXT="ein gnuplot-Skript generieren">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1710079820663" ID="ID_346209836" MODIFIED="1712107106974" TEXT="ein gnuplot-Skript generieren">
+<icon BUILTIN="pencil"/>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710633755833" ID="ID_395770848" MODIFIED="1710633858137" TEXT="Grundlagen Gnuplot lernen">
 <arrowlink COLOR="#425fc8" DESTINATION="ID_1898552649" ENDARROW="Default" ENDINCLINATION="-1042;110;" ID="Arrow_ID_1130805562" STARTARROW="None" STARTINCLINATION="-1030;94;"/>
 <icon BUILTIN="info"/>
@@ -114345,7 +114345,7 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 <node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1711767387817" ID="ID_249731836" MODIFIED="1711815901556" TEXT="l&#xe4;ngerfristig wird es mehrere Basis-Templates geben">
 <icon BUILTIN="messagebox_warning"/>
 </node>
-<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1711767397471" ID="ID_1445830361" MODIFIED="1711767408302" TEXT="welche Teile sind sinnvollerweise flexibel?">
+<node COLOR="#435e98" CREATED="1711767397471" ID="ID_1445830361" MODIFIED="1712107118901" TEXT="welche Teile sind sinnvollerweise flexibel?">
 <icon BUILTIN="help"/>
 <node CREATED="1711816116763" ID="ID_1377511306" MODIFIED="1711816131828" TEXT="im konkreten Beispiel: das sekund&#xe4;re Diagramm ist optional zuschaltbar"/>
 <node CREATED="1711816139855" ID="ID_152599714" MODIFIED="1711816150762" TEXT="die Linestyles werden komplett als Baustein injiziert"/>
@@ -114443,14 +114443,14 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 <icon BUILTIN="yes"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1711900330296" ID="ID_1080765414" MODIFIED="1711900374682" TEXT="typischerweise: Familie von Aufruf-Front-ends">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1711900330296" ID="ID_1080765414" MODIFIED="1712107097941" TEXT="typischerweise: Familie von Aufruf-Front-ends">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1711900349274" ID="ID_1386251374" MODIFIED="1711900360595" TEXT="der eigentliche Aufruf kann mit einem Rec::Mutator erfolgen"/>
 <node CREATED="1711900361616" ID="ID_1245877883" MODIFIED="1711900371643" TEXT="dann gibt es zus&#xe4;tzliche Builder, die schon Teile vorbereiten"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1711820846814" ID="ID_131434294" MODIFIED="1711821174833" TEXT="Template-Bausteine">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1711820846814" ID="ID_131434294" MODIFIED="1712107103288" TEXT="Template-Bausteine">
+<icon BUILTIN="pencil"/>
 <node COLOR="#338800" CREATED="1711820852404" ID="ID_1098550176" MODIFIED="1711904777126" TEXT="einfacher Daten-Plot">
 <icon BUILTIN="button_ok"/>
 <node CREATED="1711820876736" ID="ID_1449855332" MODIFIED="1711820912379" TEXT="gemeinsame Abszisse + 1...9 Datenreihen"/>
@@ -114507,7 +114507,9 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 </node>
 <node COLOR="#338800" CREATED="1712100586841" ID="ID_1585686206" MODIFIED="1712105195332" TEXT="Flexibilit&#xe4;t schaffen">
 <icon BUILTIN="yes"/>
-<node CREATED="1712100629386" ID="ID_1231784651" MODIFIED="1712100658602" TEXT="Die Zahl der Datenspalten als Layout-Steuervariable verwenden"/>
+<node BACKGROUND_COLOR="#c8c0b6" COLOR="#2322a3" CREATED="1712100629386" ID="ID_1231784651" MODIFIED="1712107218965" TEXT="Die Zahl der Datenspalten als Layout-Steuervariable verwenden">
+<linktarget COLOR="#506aca" DESTINATION="ID_1231784651" ENDARROW="Default" ENDINCLINATION="-360;16;" ID="Arrow_ID_1015977173" SOURCE="ID_1362230214" STARTARROW="None" STARTINCLINATION="188;-38;"/>
+</node>
 <node CREATED="1712100660810" ID="ID_1873990314" MODIFIED="1712100721346" TEXT="User hat daf&#xfc;r zu sorgen, da&#xdf; diese Datenspalten in der ersten Datenzeile gegeben sind">
 <richcontent TYPE="NOTE"><html>
   <head/>
@@ -114567,30 +114569,31 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1710079848190" ID="ID_227233521" MODIFIED="1711904804957" TEXT="Darstellung ausarbeiten">
-<icon BUILTIN="pencil"/>
+<node COLOR="#338800" CREATED="1710079848190" ID="ID_227233521" MODIFIED="1712107151062" TEXT="Darstellung ausarbeiten">
+<icon BUILTIN="button_ok"/>
 <node COLOR="#338800" CREATED="1711904787566" ID="ID_1933798904" MODIFIED="1711904792520" TEXT="einfacher Daten-Plot">
 <icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710079926851" ID="ID_1457237228" MODIFIED="1710079939594" TEXT="Scatter-Plot">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1710079926851" ID="ID_1457237228" MODIFIED="1712107144084" TEXT="Scatter-Plot">
+<icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710079932704" ID="ID_1073652291" MODIFIED="1710079939594" TEXT="Regressionslinie">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1710079932704" ID="ID_1073652291" MODIFIED="1712107147466" TEXT="Regressionslinie">
+<icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710079942505" ID="ID_1703688749" MODIFIED="1710080060314" TEXT="Darstellung f&#xfc;r sekund&#xe4;re Werte">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1710079942505" ID="ID_1703688749" MODIFIED="1712107150316" TEXT="Darstellung f&#xfc;r sekund&#xe4;re Werte">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1710080061651" ID="ID_1708271153" MODIFIED="1710080077627" TEXT="&#x2205; concurrency"/>
 <node CREATED="1710080078359" ID="ID_1753709562" MODIFIED="1710080082366" TEXT="&#x2205; job time"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710080104427" ID="ID_1362230214" MODIFIED="1710080121358" TEXT="sollte erweiterbar sein">
+<node COLOR="#435e98" CREATED="1710080104427" ID="ID_1362230214" MODIFIED="1712107201303" TEXT="ist erweiterbar">
+<arrowlink COLOR="#506aca" DESTINATION="ID_1231784651" ENDARROW="Default" ENDINCLINATION="-360;16;" ID="Arrow_ID_1015977173" STARTARROW="None" STARTINCLINATION="188;-38;"/>
 <icon BUILTIN="yes"/>
 </node>
 </node>
 </node>
 <node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1711820647889" ID="ID_149856563" MODIFIED="1711845599165" TEXT="GnuplotGen_test">
 <icon BUILTIN="pencil"/>
-<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1711820662341" ID="ID_1728359549" MODIFIED="1711845597133" TEXT="einfachster Testfall: ein Daten-Punkt-Plot">
-<icon BUILTIN="pencil"/>
+<node COLOR="#338800" CREATED="1711820662341" ID="ID_1728359549" MODIFIED="1712107237930" TEXT="einfachster Testfall: ein Daten-Punkt-Plot">
+<icon BUILTIN="button_ok"/>
 <node COLOR="#338800" CREATED="1711845516384" ID="ID_1778551442" MODIFIED="1711845526641" TEXT="kann einfaches Diagramm generieren">
 <icon BUILTIN="button_ok"/>
 </node>
@@ -114603,8 +114606,37 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 <icon BUILTIN="yes"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1711845539821" ID="ID_1805048889" MODIFIED="1711845580237" TEXT="einige Bestandteile verifizieren">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1711845539821" ID="ID_1805048889" MODIFIED="1712107236895" TEXT="einige Bestandteile verifizieren">
+<icon BUILTIN="button_ok"/>
+</node>
+</node>
+<node COLOR="#338800" CREATED="1712107249502" ID="ID_758586411" MODIFIED="1712107251833" TEXT="plot_scatter_regression">
+<icon BUILTIN="button_ok"/>
+<node COLOR="#5b280f" CREATED="1712107263609" ID="ID_1696889047" MODIFIED="1712107278412" TEXT="Verifikation hat ihre Grenzen">
+<icon BUILTIN="yes"/>
+<icon BUILTIN="stop-sign"/>
+<node CREATED="1712107282261" ID="ID_848988536" MODIFIED="1712107365616" TEXT="bedingt durch die Logik im Gnuplot-Skript">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      man kann hier eigentlich nur stichprobenartig verifizieren, da&#223; das jeweilige Template zum Einsatz kam, und da&#223; einige markante Werte per Text-Templating eingebaut wurden. Also z.B. die Datenheader, oder eine Achsenbeschriftung.
+    </p>
+  </body>
+</html>
+</richcontent>
+</node>
+<node COLOR="#5b280f" CREATED="1712107290460" ID="ID_352326813" MODIFIED="1712107309763" TEXT="wir k&#xf6;nnen / wollen nicht Gnuplot in der Testsuite aufrufen">
+<icon BUILTIN="closed"/>
+</node>
+<node COLOR="#5b280f" CREATED="1712107436066" ID="ID_11426036" MODIFIED="1712107460789" TEXT="es ist nicht sinnvoll, das Skript literal zu verifzieren (da unflexibel)">
+<icon BUILTIN="yes"/>
+</node>
+<node COLOR="#435e98" CREATED="1712107385138" ID="ID_156205108" MODIFIED="1712107426233" TEXT="letztlich bleibt nur, das Resultat visuell zu pr&#xfc;fen">
+<icon BUILTIN="yes"/>
+</node>
 </node>
 </node>
 </node>