diff --git a/src/gui/timeline/body-canvas-widget.cpp b/src/gui/timeline/body-canvas-widget.cpp
index 52d4e8383..ddbf5f2df 100644
--- a/src/gui/timeline/body-canvas-widget.cpp
+++ b/src/gui/timeline/body-canvas-widget.cpp
@@ -57,17 +57,25 @@ namespace timeline {
   
   
   
+  BodyCanvasWidget::~BodyCanvasWidget() { }
   
   
   BodyCanvasWidget::BodyCanvasWidget ()
+    : Gtk::ScrolledWindow{}
+    , canvas_{}
     {
+      this->set_shadow_type(Gtk::SHADOW_IN);
+      this->set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);  // always need a horizontal scrollbar
+      this->property_expand() = true;                               //  dynamically grab any available additional space
+      this->add(canvas_);
+      
+//    canvas_.adjustSize();
+      
+      // show everything....
+      this->show_all();
     }
   
   
-  BodyCanvasWidget::~BodyCanvasWidget()
-  {
-  }
-  
   
   
   
diff --git a/src/gui/timeline/body-canvas-widget.hpp b/src/gui/timeline/body-canvas-widget.hpp
index faf4ca6d4..a979e3060 100644
--- a/src/gui/timeline/body-canvas-widget.hpp
+++ b/src/gui/timeline/body-canvas-widget.hpp
@@ -70,17 +70,27 @@ namespace gui  {
 namespace timeline {
   
   
+  class TimelineCanvas
+    : public Gtk::Layout
+    {
+      
+    };
+  
+  
   /**
    * @todo WIP-WIP as of 12/2016
    */
   class BodyCanvasWidget
+    : public Gtk::ScrolledWindow
     {
+      TimelineCanvas canvas_;
+      
     public:
       BodyCanvasWidget();
      ~BodyCanvasWidget();
-     
+      
     private:/* ===== Internals ===== */
-     
+      
     };
   
   
diff --git a/src/gui/timeline/header-pane-widget.cpp b/src/gui/timeline/header-pane-widget.cpp
index 6590e3e4e..c16aec2ec 100644
--- a/src/gui/timeline/header-pane-widget.cpp
+++ b/src/gui/timeline/header-pane-widget.cpp
@@ -58,16 +58,15 @@ namespace timeline {
   
   
   
+  HeaderPaneWidget::~HeaderPaneWidget() { }
+  
   
   HeaderPaneWidget::HeaderPaneWidget ()
+    : Gtk::Box{Gtk::ORIENTATION_VERTICAL}
     {
     }
   
   
-  HeaderPaneWidget::~HeaderPaneWidget()
-  {
-  }
-  
   
   
   
diff --git a/src/gui/timeline/header-pane-widget.hpp b/src/gui/timeline/header-pane-widget.hpp
index ef4bf8a29..a9feeaf16 100644
--- a/src/gui/timeline/header-pane-widget.hpp
+++ b/src/gui/timeline/header-pane-widget.hpp
@@ -60,6 +60,7 @@ namespace timeline {
    * @todo WIP-WIP as of 12/2016
    */
   class HeaderPaneWidget
+    : public Gtk::Box
     {
     public:
       HeaderPaneWidget();
diff --git a/src/gui/timeline/timeline-layout.cpp b/src/gui/timeline/timeline-layout.cpp
index a57284a1b..b2c527eec 100644
--- a/src/gui/timeline/timeline-layout.cpp
+++ b/src/gui/timeline/timeline-layout.cpp
@@ -61,10 +61,13 @@ namespace timeline {
   
   TimelineLayout::~TimelineLayout() { }
   
-  TimelineLayout::TimelineLayout ()
-    : headerPane_{}
+  TimelineLayout::TimelineLayout (Gtk::Paned& topLevelContainer)
+    : paneSplitPosition_{topLevelContainer.property_position()}
+    , headerPane_{}
     , bodyCanvas_{}
     {
+      topLevelContainer.add1 (headerPane_);
+      topLevelContainer.add2 (bodyCanvas_);
     }
   
   
diff --git a/src/gui/timeline/timeline-layout.hpp b/src/gui/timeline/timeline-layout.hpp
index b7b714f60..892958014 100644
--- a/src/gui/timeline/timeline-layout.hpp
+++ b/src/gui/timeline/timeline-layout.hpp
@@ -105,14 +105,17 @@ namespace timeline {
    */
   class TimelineLayout
     {
+      Glib::PropertyProxy<int> paneSplitPosition_;
+      
       HeaderPaneWidget headerPane_;
       BodyCanvasWidget bodyCanvas_;
       
+      
     public:
-      TimelineLayout ();
+      TimelineLayout (Gtk::Paned&);
      ~TimelineLayout();
       
-      void installRootTrack(TrackHeadWidget&,TrackBody&);
+      void installRootTrack (TrackHeadWidget&,TrackBody&);
       
     private:/* ===== Internals ===== */
      
diff --git a/src/gui/timeline/timeline-widget.cpp b/src/gui/timeline/timeline-widget.cpp
index be1d6f0fe..1c8b62dd1 100644
--- a/src/gui/timeline/timeline-widget.cpp
+++ b/src/gui/timeline/timeline-widget.cpp
@@ -69,7 +69,7 @@ namespace timeline {
   
   TimelineWidget::TimelineWidget (BusTerm::ID identity, BusTerm::ID trackID, BusTerm& nexus)
     : TimelinePage{}
-    , layout_{new TimelineLayout}
+    , layout_{new TimelineLayout{*this}}
     , control_{new TimelineController{identity, trackID, nexus, *layout_}}
     {
       UNIMPLEMENTED ("build the timeline UI");
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index bd89a5fbd..88d3146d4 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -19058,9 +19058,17 @@
 <node CREATED="1480607033512" ID="ID_1815699851" MODIFIED="1518487921082" TEXT="Kopf">
 <node CREATED="1540641296565" ID="ID_991484939" MODIFIED="1540652852076" TEXT="Navigations-Bereich">
 <arrowlink DESTINATION="ID_1952536945" ENDARROW="Default" ENDINCLINATION="64;0;" ID="Arrow_ID_1459742640" STARTARROW="None" STARTINCLINATION="64;0;"/>
+<node CREATED="1540682850119" HGAP="39" ID="ID_1885212949" MODIFIED="1540682870351" TEXT="Grid?"/>
 </node>
 <node CREATED="1540641305092" ID="ID_18552766" MODIFIED="1540652856371" TEXT="Header-Pane">
 <arrowlink DESTINATION="ID_151954769" ENDARROW="Default" ENDINCLINATION="50;0;" ID="Arrow_ID_1923805019" STARTARROW="None" STARTINCLINATION="50;0;"/>
+<node CREATED="1540682883065" HGAP="94" ID="ID_1549568084" MODIFIED="1540682891807" TEXT="2.Box" VSHIFT="12">
+<node CREATED="1540682893097" ID="ID_419298158" MODIFIED="1540682899815" TEXT="interne Struktur?">
+<icon BUILTIN="help"/>
+<node CREATED="1540682901320" ID="ID_1054686680" MODIFIED="1540682907481" TEXT="stacked boxes?"/>
+<node CREATED="1540682908088" ID="ID_785207504" MODIFIED="1540682916074" TEXT="table grid?"/>
+</node>
+</node>
 </node>
 </node>
 <node CREATED="1480607035712" ID="ID_1405339006" MODIFIED="1518487921082" TEXT="Rumpf">
@@ -35671,6 +35679,34 @@
 </node>
 </node>
 </node>
+<node CREATED="1540682664865" ID="ID_1702211999" MODIFIED="1540682668371" TEXT="Metaprogramming">
+<node CREATED="1540682674455" ID="ID_1625152878" MODIFIED="1540682679322" TEXT="Typliste filtern">
+<node CREATED="1540682680286" ID="ID_1172485112" MODIFIED="1540682685721" TEXT="nach canConvert">
+<node CREATED="1540682731631" ID="ID_1059841081" MODIFIED="1540682746102" TEXT="die Typen, in die man umwandeln kann">
+<icon BUILTIN="info"/>
+</node>
+<node CREATED="1540682747461" ID="ID_1097757447" MODIFIED="1540682763478" TEXT="sinnvoll zum Binden an Rec&lt;GenNode&gt;">
+<icon BUILTIN="idea"/>
+</node>
+<node CREATED="1540682686558" ID="ID_349304672" MODIFIED="1540682729346" TEXT="aber das eigentliche Problem ist...">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      ...wie bekommt man dann den konvertierten Wert 'raus.
+    </p>
+    <p>
+      Visitor ist entweder void, oder bool
+    </p>
+  </body>
+</html>
+</richcontent>
+</node>
+</node>
+</node>
+</node>
 </node>
 <node CREATED="1482524641484" ID="ID_1651495185" MODIFIED="1518487921096" TEXT="Architektur">
 <node CREATED="1531419748046" ID="ID_1791265013" MODIFIED="1531419752937" TEXT="Lebenszyklus">