diff --git a/src/lib/diff/gen-node.cpp b/src/lib/diff/gen-node.cpp
index ba930a329..f20985686 100644
--- a/src/lib/diff/gen-node.cpp
+++ b/src/lib/diff/gen-node.cpp
@@ -66,7 +66,7 @@ namespace diff{
   const Ref Ref::I      ("_I_");
   const Ref Ref::NO     ("_NO_");
   const Ref Ref::END    ("_END_");
-  const Ref Ref::THIS   ("_THIS_");
+  const Ref Ref::THIS   ("_THIS_");     ////////TICKET #996 : Feature of questionable usefulness. Maybe dispensable?
   const Ref Ref::CHILD  ("_CHILD_");
   const Ref Ref::ATTRIBS("_ATTRIBS_");
   
diff --git a/src/lib/diff/tree-diff.hpp b/src/lib/diff/tree-diff.hpp
index 329001661..4c7e8259a 100644
--- a/src/lib/diff/tree-diff.hpp
+++ b/src/lib/diff/tree-diff.hpp
@@ -121,7 +121,7 @@ namespace diff{
    *          or \c pick or \c find), it is allowed immediately to open the
    *          nested scope with \c mut(Ref::THIS) -- which circumvents the
    *          problem that it is sometimes difficult to know the precise ID,
-   *          especially when hand-writing a diff to populate a data structure.
+   *          especially when hand-writing a diff to populate a data structure.                   ////////TICKET #996 : `Ref::THIS` is a questionable feature
    * - \c emu bracketing construct and counterpart to \c mut(ID). This verb
    *          must be given precisely at the end of the nested scope (it is
    *          not allowed to "return" from the middle of a scope, for sake
diff --git a/src/lib/diff/tree-mutator-collection-binding.hpp b/src/lib/diff/tree-mutator-collection-binding.hpp
index b7c4f5120..5fd7eaab3 100644
--- a/src/lib/diff/tree-mutator-collection-binding.hpp
+++ b/src/lib/diff/tree-mutator-collection-binding.hpp
@@ -149,7 +149,9 @@
         iterator
         locate (GenNode const& targetSpec)
           {
-            if (not collection.empty() and matches (targetSpec, collection.back()))
+            if (not collection.empty()
+                and (Ref::THIS.matches(targetSpec.idi)
+                     or matches (targetSpec, collection.back())))
               return lastElm();
             else
               return search (targetSpec, eachElm(collection));
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index cb2a8ed8d..a000357c7 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -2732,8 +2732,7 @@
       daß der Client hier eigentlich ein Protokoll implementieren muß.
     </p>
   </body>
-</html>
-</richcontent>
+</html></richcontent>
 </node>
 <node CREATED="1458850263688" ID="ID_555018476" MODIFIED="1458850272315" TEXT="Zusammenf&#xfc;hren">
 <node CREATED="1458850294083" ID="ID_393704697" MODIFIED="1458850302901" TEXT="der normale GenNode-Applikator"/>
@@ -3390,7 +3389,7 @@
 </node>
 </node>
 <node CREATED="1448063874479" HGAP="43" ID="ID_739054690" MODIFIED="1453546352792" TEXT="UI-Modell" VSHIFT="1"/>
-<node CREATED="1434128074725" FOLDED="true" HGAP="28" ID="ID_933994138" MODIFIED="1460753607324" TEXT="Diff-System" VSHIFT="1">
+<node CREATED="1434128074725" FOLDED="true" HGAP="28" ID="ID_933994138" MODIFIED="1460934815823" TEXT="Diff-System" VSHIFT="1">
 <font NAME="SansSerif" SIZE="14"/>
 <icon BUILTIN="pencil"/>
 <node CREATED="1434128278990" ID="ID_106354755" MODIFIED="1434128283641" TEXT="Diff-Darstellung"/>
@@ -4612,6 +4611,10 @@
 <node CREATED="1443734884526" ID="ID_1720972097" MODIFIED="1443734907375" TEXT="gilt postfix"/>
 <node CREATED="1443734942974" ID="ID_72035627" MODIFIED="1443734946841" TEXT="sonst wie normales MUT"/>
 <node CREATED="1443734955012" ID="ID_132520838" MODIFIED="1443734972286" TEXT="erlaubt Anlegen + Populieren"/>
+<node CREATED="1460934541540" ID="ID_789170184" MODIFIED="1460934562112" TEXT="von fragw&#xfc;rdigem Nutzen!">
+<font ITALIC="true" NAME="SansSerif" SIZE="12"/>
+<icon BUILTIN="messagebox_warning"/>
+</node>
 </node>
 </node>
 </node>
@@ -5419,7 +5422,29 @@
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#fdfdcf" COLOR="#990000" CREATED="1443740543812" ID="ID_1766169268" MODIFIED="1443741858388" TEXT="Tests">
+<node CREATED="1460934597764" FOLDED="true" HGAP="163" ID="ID_1014666775" MODIFIED="1460934811386" TEXT="Review" VSHIFT="6">
+<font NAME="SansSerif" SIZE="15"/>
+<icon BUILTIN="flag-yellow"/>
+<node CREATED="1460934670043" ID="ID_1299827687" MODIFIED="1460934677134" TEXT="sp&#xe4;ter zu &#xfc;berpr&#xfc;fen">
+<node CREATED="1460934686017" ID="ID_900313780" MODIFIED="1460934697931" TEXT="Klarheit"/>
+<node CREATED="1460934698430" ID="ID_1527149180" MODIFIED="1460934702241" TEXT="praktischer Kontext"/>
+</node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1460934704022" ID="ID_369718039" MODIFIED="1460934723329" TEXT="fragw&#xfc;rdig">
+<icon BUILTIN="help"/>
+<node CREATED="1460934726315" ID="ID_865694069" MODIFIED="1460934747260" TEXT="Immutabilit&#xe4;t">
+<node CREATED="1460934748064" ID="ID_321786426" MODIFIED="1460934753060" TEXT="keine klare Linie"/>
+<node CREATED="1460934753440" ID="ID_44139402" MODIFIED="1460934764386" TEXT="einerseits ja, feste Datenwerte"/>
+<node CREATED="1460934764830" ID="ID_594837209" MODIFIED="1460934769313" TEXT="dann aber doch Assignment"/>
+<node CREATED="1460934771253" ID="ID_1299180901" MODIFIED="1460934782511" TEXT="und ein Gemurkse bei den Records"/>
+</node>
+<node CREATED="1460934785067" ID="ID_945933568" MODIFIED="1460934792557" TEXT="Abk&#xfc;rzungen in der Sprache">
+<node CREATED="1460934793738" ID="ID_1602968303" MODIFIED="1460934798453" TEXT="Ref::CHILD"/>
+<node CREATED="1460934799137" ID="ID_1189559717" MODIFIED="1460934801653" TEXT="Ref::THIS"/>
+<node CREATED="1460934802385" ID="ID_961490107" MODIFIED="1460934807556" TEXT="Ref::ATTRIBS"/>
+</node>
+</node>
+</node>
+<node BACKGROUND_COLOR="#fdfdcf" COLOR="#990000" CREATED="1443740543812" HGAP="17" ID="ID_1766169268" MODIFIED="1460934606704" TEXT="Tests" VSHIFT="20">
 <font NAME="SansSerif" SIZE="14"/>
 <node CREATED="1443740549220" ID="ID_167459949" MODIFIED="1443740564198" TEXT="List-Diff">
 <icon BUILTIN="button_ok"/>