diff --git a/src/lib/iter-tree-explorer.hpp b/src/lib/iter-tree-explorer.hpp
index 9de94078e..801d969ec 100644
--- a/src/lib/iter-tree-explorer.hpp
+++ b/src/lib/iter-tree-explorer.hpp
@@ -366,8 +366,13 @@ namespace lib {
         using SrcVal  = typename SrcIter::value_type;
       };
     
-    
-    
+  }//(End) TreeExplorer traits
+  
+  
+  
+  
+  
+  namespace iter_explorer { // Implementation of Iterator decorating layers...
     
     /**
      * @internal technical details of binding a functor into the TreeExplorer.
@@ -395,7 +400,7 @@ namespace lib {
      * @tparam SRC the source iterator type to apply when attempting to use a generic lambda as functor
      */
     template<class FUN, typename SRC>
-    struct _BoundFunctorTraits
+    struct _BoundFunctor
       {
         /** handle all regular "function-like" entities */
         template<typename F, typename SEL =void>
@@ -455,12 +460,7 @@ namespace lib {
           };
       };
     
-  }//(End) TreeExplorer traits
-  
-  
-  
-  
-  namespace iter_explorer { // Implementation of Iterator decorating layers...
+    
     
     /**
      * @internal Base of pipe processing decorator chain.
@@ -517,7 +517,7 @@ namespace lib {
       : public SRC
       {
         static_assert(can_IterForEach<SRC>::value, "Lumiera Iterator required as source");
-        using _Traits = _BoundFunctorTraits<FUN,SRC>;
+        using _Traits = _BoundFunctor<FUN,SRC>;
         using ExpandFunctor = typename _Traits::Functor;
         
         using ResIter = typename _DecoratorTraits<typename _Traits::Res>::SrcIter;
@@ -661,7 +661,7 @@ namespace lib {
       : public SRC
       {
         static_assert(can_IterForEach<SRC>::value, "Lumiera Iterator required as source");
-        using _Traits = _BoundFunctorTraits<FUN,SRC>;
+        using _Traits = _BoundFunctor<FUN,SRC>;
         using Res = typename _Traits::Res;
         
         using TransformFunctor = typename _Traits::Functor;
@@ -748,7 +748,7 @@ namespace lib {
       : public SRC
       {
         static_assert(can_IterForEach<SRC>::value, "Lumiera Iterator required as source");
-        using _Traits = _BoundFunctorTraits<FUN,SRC>;
+        using _Traits = _BoundFunctor<FUN,SRC>;
         using Res = typename _Traits::Res;
         static_assert(std::is_constructible<bool, Res>::value, "Functor must be a predicate");
         
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 7b084d35b..b92f0c85e 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -7602,7 +7602,7 @@
 <node CREATED="1513561531383" ID="ID_442154302" MODIFIED="1513561547728" TEXT="Match-Algo mu&#xdf; start-Offset verwalten und draufschlagen"/>
 </node>
 </node>
-<node COLOR="#338800" CREATED="1513561577840" HGAP="52" ID="ID_260039139" MODIFIED="1513978305941" TEXT="Struktur Navigations-Zustand" VSHIFT="13">
+<node COLOR="#338800" CREATED="1513561577840" FOLDED="true" HGAP="63" ID="ID_260039139" MODIFIED="1513985143504" TEXT="Struktur Navigations-Zustand" VSHIFT="22">
 <icon BUILTIN="button_ok"/>
 <node CREATED="1513561744004" ID="ID_937539446" MODIFIED="1513961543467" TEXT="h&#xe4;ngt ab von relativ/absolut?">
 <arrowlink COLOR="#9493b7" DESTINATION="ID_1500554436" ENDARROW="Default" ENDINCLINATION="91;103;" ID="Arrow_ID_811314610" STARTARROW="None" STARTINCLINATION="-39;0;"/>
@@ -7974,8 +7974,8 @@
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513961620603" ID="ID_1014293898" MODIFIED="1513961632617" TEXT="Implementierung">
 <icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513962702097" ID="ID_1829231358" MODIFIED="1513963104538" TEXT="Iterator-Typ konstruieren">
-<arrowlink COLOR="#1d3877" DESTINATION="ID_989478065" ENDARROW="Default" ENDINCLINATION="33;-151;" ID="Arrow_ID_1500458185" STARTARROW="Default" STARTINCLINATION="-56;-2;"/>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513962702097" ID="ID_1829231358" MODIFIED="1513985168996" TEXT="Iterator-Typ konstruieren">
+<arrowlink COLOR="#1d3877" DESTINATION="ID_989478065" ENDARROW="Default" ENDINCLINATION="33;-151;" ID="Arrow_ID_1500458185" STARTARROW="Default" STARTINCLINATION="-102;2;"/>
 <icon BUILTIN="pencil"/>
 <node CREATED="1513966648491" ID="ID_558045889" MODIFIED="1513966652550" TEXT="Anforderungen">
 <node CREATED="1513962999465" ID="ID_677650141" MODIFIED="1513963008827" TEXT="ist nicht mehr IterSource&lt;String&gt;::iterator"/>
@@ -8014,7 +8014,7 @@
 </richcontent>
 </node>
 </node>
-<node CREATED="1513980929860" ID="ID_1710959906" MODIFIED="1513980939173" TEXT="Alternativen?">
+<node CREATED="1513980929860" FOLDED="true" ID="ID_1710959906" MODIFIED="1513985103849" TEXT="Alternativen?">
 <icon BUILTIN="help"/>
 <node CREATED="1513980747077" ID="ID_458778699" MODIFIED="1513980959957" TEXT="IterExploreSource geschickt nutzen">
 <icon BUILTIN="button_cancel"/>
@@ -8037,7 +8037,8 @@
 </node>
 </node>
 </node>
-<node CREATED="1513981063250" ID="ID_1701586789" MODIFIED="1513981066214" TEXT="Builder">
+<node CREATED="1513981063250" ID="ID_1701586789" MODIFIED="1513985115106" TEXT="Builder">
+<icon BUILTIN="idea"/>
 <node CREATED="1513981080616" ID="ID_75384138" MODIFIED="1513981107456" TEXT="bekommt TreeStructureNavigator *"/>
 <node CREATED="1513981138280" ID="ID_878429069" MODIFIED="1513981146075" TEXT="baut darauf den IterSource::iterator"/>
 <node CREATED="1513981147519" ID="ID_1838710944" MODIFIED="1513981198132" TEXT="setzt darauf einen TreeExplorer auf"/>
@@ -8067,6 +8068,21 @@
 <icon BUILTIN="info"/>
 </node>
 </node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513986023498" ID="ID_1413967372" MODIFIED="1513986029842" TEXT="Integration mit TreeExplorer">
+<icon BUILTIN="flag-yellow"/>
+<node CREATED="1513986032290" ID="ID_1427647343" MODIFIED="1513986048710" TEXT="Problem: Zugang zur IterSource">
+<icon BUILTIN="messagebox_warning"/>
+<node CREATED="1513986054199" ID="ID_1239076586" MODIFIED="1513986063345" TEXT="bisher: protected im IterSource::iterator"/>
+<node CREATED="1513986114902" ID="ID_1775644602" MODIFIED="1513986130220" TEXT="&quot;riecht&quot; nach einem generellen Problem">
+<font ITALIC="true" NAME="SansSerif" SIZE="12"/>
+<icon BUILTIN="clanbomber"/>
+</node>
+<node CREATED="1513986064509" ID="ID_1794003959" MODIFIED="1513986083318" TEXT="nun m&#xfc;&#xdf;te man...">
+<node CREATED="1513986085162" ID="ID_1791331544" MODIFIED="1513986090214" TEXT="von au&#xdf;en daran kommen"/>
+<node CREATED="1513986090946" ID="ID_668980524" MODIFIED="1513986103340" TEXT="und auch noch downcasten auf TreeStructureNavigator"/>
+</node>
+</node>
+</node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513962765760" ID="ID_795911284" MODIFIED="1513963084358" TEXT="Demo-Impl mit GenNode-Tree">
 <icon BUILTIN="flag-yellow"/>
 </node>
@@ -8082,8 +8098,8 @@
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1510941740069" ID="ID_1408571420" MODIFIED="1513560742303" TEXT="erweiterter ChildIter">
 <arrowlink COLOR="#283b63" DESTINATION="ID_596422747" ENDARROW="Default" ENDINCLINATION="66;49;" ID="Arrow_ID_1521598219" STARTARROW="Default" STARTINCLINATION="94;-19;"/>
 <icon BUILTIN="pencil"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513560671819" ID="ID_989478065" MODIFIED="1513962937735" TEXT="Interface umstellen">
-<linktarget COLOR="#1d3877" DESTINATION="ID_989478065" ENDARROW="Default" ENDINCLINATION="33;-151;" ID="Arrow_ID_1500458185" SOURCE="ID_1829231358" STARTARROW="Default" STARTINCLINATION="-56;-2;"/>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513560671819" ID="ID_989478065" MODIFIED="1513985168997" TEXT="Interface umstellen">
+<linktarget COLOR="#1d3877" DESTINATION="ID_989478065" ENDARROW="Default" ENDINCLINATION="33;-151;" ID="Arrow_ID_1500458185" SOURCE="ID_1829231358" STARTARROW="Default" STARTINCLINATION="-102;2;"/>
 <icon BUILTIN="flag-yellow"/>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513560680562" ID="ID_634877617" MODIFIED="1513560754433" TEXT="TreeExplorer-Ausdr&#xfc;cke">