diff --git a/src/lib/verb-token.hpp b/src/lib/verb-token.hpp
index bd8b509a7..4a7eb0521 100644
--- a/src/lib/verb-token.hpp
+++ b/src/lib/verb-token.hpp
@@ -81,8 +81,10 @@ namespace lib {
   template<class REC, class RET, typename... ARGS>
   class VerbToken<REC, RET(ARGS...)>
     {
+    public:
       typedef RET (REC::*Handler) (ARGS...);
       
+    private:
       Handler handler_;
       Literal token_;
       
diff --git a/src/stage/timeline/body-canvas-widget.hpp b/src/stage/timeline/body-canvas-widget.hpp
index b8925e51e..b24b193d4 100644
--- a/src/stage/timeline/body-canvas-widget.hpp
+++ b/src/stage/timeline/body-canvas-widget.hpp
@@ -58,10 +58,11 @@
 #define STAGE_TIMELINE_BODY_CANVAS_WIDGET_H
 
 #include "stage/gtk-base.hpp"
+#include "stage/timeline/track-profile.hpp"
 
 //#include "lib/util.hpp"
 
-#include <memory>
+//#include <memory>
 //#include <vector>
 
 
@@ -69,18 +70,15 @@
 namespace stage  {
 namespace timeline {
   
-  class TrackProfile;
   class TrackBody;
   
   
   class TimelineCanvas
     : public Gtk::Layout
     {
-      using TProfile = std::unique_ptr<TrackProfile>;
-      
     public:
       TrackBody* rootBody_;
-      TProfile profile_;
+      TrackProfile profile_;
       
       TimelineCanvas();
       
diff --git a/src/stage/timeline/track-body.hpp b/src/stage/timeline/track-body.hpp
index 1efa69f2f..dfae724cb 100644
--- a/src/stage/timeline/track-body.hpp
+++ b/src/stage/timeline/track-body.hpp
@@ -41,7 +41,6 @@
 #define STAGE_TIMELINE_TRACK_BODY_H
 
 #include "stage/gtk-base.hpp"
-#include "stage/timeline/track-profile.hpp"
 #include "stage/timeline/ruler-track.hpp"
 
 //#include "lib/util.hpp"
diff --git a/src/stage/timeline/track-profile.hpp b/src/stage/timeline/track-profile.hpp
index dca5c322e..8cd50f52b 100644
--- a/src/stage/timeline/track-profile.hpp
+++ b/src/stage/timeline/track-profile.hpp
@@ -41,7 +41,8 @@
 #include "stage/gtk-base.hpp"
 #include "lib/verb-token.hpp"
 
-//#include "lib/util.hpp"
+#include "lib/symbol.hpp"
+#include "lib/util.hpp"
 
 //#include <memory>
 #include <vector>
@@ -51,6 +52,21 @@
 namespace stage  {
 namespace timeline {
   
+  using lib::Literal;
+  
+  class ProfileInterpreter
+    {
+      public:
+       ~ProfileInterpreter() { }            ///< this is an interface
+        
+        virtual void ruler(uint h)   =0;    ///< represent a overview/ruler track with the given height
+        virtual void gap(uint h)     =0;    ///< represent a gap to structure the display
+        virtual void content(uint h) =0;    ///< represent a content area with the given vertical extension
+        virtual void open(uint n)    =0;    ///< indicate entering a nested structure, typically as 3D inset (`n` is always 1)
+        virtual void close(uint n)   =0;    ///< indicate the end of `n` nested structures, typically by ascending back `n` levels
+        virtual void prelude(uint f) =0;    ///< start rack presentation at top of the timeline, with `f` pinned (always visible) elements
+        virtual void coda(uint pad)  =0;    ///< the closing part of the timeline at the bottom of the track display, with `pad` additional padding
+    };
   
   /**
    * Description of the structure and arrangement of tracks for display in the UI.
@@ -61,13 +77,44 @@ namespace timeline {
    * we let the individual TrackBody elements just emit these structure description.
    * @todo WIP-WIP as of 4/2019
    */
-  class TrackProfile
+  struct TrackProfile
     {
+      using SlopeVerb = lib::VerbToken<ProfileInterpreter, void(uint)>;
+      using SlopeElm =  std::tuple<SlopeVerb, uint>;
+      using Elements =  std::vector<SlopeElm>;
+      
+      Elements elements;
+      
+      // default constructible, standard copy operations
+      
+      explicit
+      operator bool()  const
+        {
+          return not util::isnil (elements);
+        }
+      
+    private:/* ===== Internals: handling tokens ===== */
+      void
+      append (SlopeVerb::Handler handler, Literal token, uint param)
+        {
+          elements.emplace_back (SlopeVerb{handler, token}, param);
+        }
+      
+#define TOKEN_BUILDER(_TOK_)     \
+      void                        \
+      append_ ## _TOK_ (uint param)\
+        {                           \
+          this->append (&ProfileInterpreter::_TOK_, STRINGIFY(_TOK_), param);\
+        }
       
     public:
-      
-      
-    private:/* ===== Internals ===== */
+      TOKEN_BUILDER (ruler)
+      TOKEN_BUILDER (gap)
+      TOKEN_BUILDER (content)
+      TOKEN_BUILDER (open)
+      TOKEN_BUILDER (close)
+      TOKEN_BUILDER (prelude)
+      TOKEN_BUILDER (coda)
     };
   
   
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 7bba4b305..a707825ad 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -19693,12 +19693,22 @@
 </node>
 </node>
 </node>
-<node CREATED="1554516243633" ID="ID_386714682" MODIFIED="1554516245860" TEXT="Verben">
-<node CREATED="1554516247416" ID="ID_711078188" MODIFIED="1554516251040" TEXT="ruler"/>
-<node CREATED="1554516251688" ID="ID_24688004" MODIFIED="1554516256283" TEXT="gap"/>
-<node CREATED="1554516257065" ID="ID_389097560" MODIFIED="1554516261186" TEXT="content"/>
-<node CREATED="1554516438055" ID="ID_1490793853" MODIFIED="1554516446110" TEXT="open / close"/>
-<node CREATED="1554567321239" FOLDED="true" ID="ID_1638157583" MODIFIED="1554567367842" TEXT="prelude / coda">
+<node COLOR="#435e98" CREATED="1554516243633" ID="ID_386714682" MODIFIED="1554572013861" TEXT="Verben">
+<icon BUILTIN="info"/>
+<node COLOR="#338800" CREATED="1554516247416" ID="ID_711078188" MODIFIED="1554571978972" TEXT="ruler">
+<icon BUILTIN="button_ok"/>
+</node>
+<node COLOR="#338800" CREATED="1554516251688" ID="ID_24688004" MODIFIED="1554571980569" TEXT="gap">
+<icon BUILTIN="button_ok"/>
+</node>
+<node COLOR="#338800" CREATED="1554516257065" ID="ID_389097560" MODIFIED="1554571981566" TEXT="content">
+<icon BUILTIN="button_ok"/>
+</node>
+<node COLOR="#338800" CREATED="1554516438055" ID="ID_1490793853" MODIFIED="1554571982521" TEXT="open / close">
+<icon BUILTIN="button_ok"/>
+</node>
+<node COLOR="#338800" CREATED="1554567321239" FOLDED="true" ID="ID_1638157583" MODIFIED="1554571983835" TEXT="prelude / coda">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1554567338981" ID="ID_1124816442" MODIFIED="1554567365787" TEXT="damit der Display-Code da was Spezielles machen kann..."/>
 </node>
 </node>
@@ -19728,8 +19738,13 @@
 <node CREATED="1554516850759" ID="ID_361309913" MODIFIED="1554516863201" TEXT="content mu&#xdf; mit ausreichend Padding platziert werden"/>
 </node>
 </node>
-<node CREATED="1554516928332" ID="ID_874621550" MODIFIED="1554516935111" TEXT="Verben definieren"/>
-<node CREATED="1554516938851" ID="ID_1733864099" MODIFIED="1554516951053" TEXT="Verb-Sequenz speichern"/>
+<node COLOR="#338800" CREATED="1554516928332" ID="ID_874621550" MODIFIED="1554571988618" TEXT="Verben definieren">
+<icon BUILTIN="button_ok"/>
+</node>
+<node CREATED="1554571992025" ID="ID_1074099376" MODIFIED="1554571997418" TEXT="Anwendung der Verben"/>
+<node COLOR="#338800" CREATED="1554516938851" ID="ID_1733864099" MODIFIED="1554571998473" TEXT="Verb-Sequenz speichern">
+<icon BUILTIN="button_ok"/>
+</node>
 <node CREATED="1554516951713" ID="ID_318462518" MODIFIED="1554516961692" TEXT="Verben (rekursiv) generieren">
 <node CREATED="1554516977204" ID="ID_305770947" MODIFIED="1554516978849" TEXT="Ruler"/>
 <node CREATED="1554516979454" ID="ID_508239889" MODIFIED="1554516983920" TEXT="Gaps handhaben"/>