diff --git a/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/behavior.mps b/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/behavior.mps
index dbdedf2a3a..9316f3ad61 100644
--- a/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/behavior.mps
+++ b/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/behavior.mps
@@ -66,7 +66,7 @@
       <concept id="1188207840427" name="jetbrains.mps.baseLanguage.structure.AnnotationInstance" flags="nn" index="2AHcQZ">
         <reference id="1188208074048" name="annotation" index="2AI5Lk" />
       </concept>
-      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ng" index="2AJDlI">
+      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ngI" index="2AJDlI">
         <child id="1188208488637" name="annotation" index="2AJF6D" />
       </concept>
       <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
@@ -169,7 +169,7 @@
         <child id="1154542793668" name="componentType" index="3g7fb8" />
         <child id="1154542803372" name="initValue" index="3g7hyw" />
       </concept>
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
@@ -187,7 +187,7 @@
         <child id="1081773367580" name="leftExpression" index="3uHU7B" />
       </concept>
       <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
-      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ngI" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
       <concept id="1163668896201" name="jetbrains.mps.baseLanguage.structure.TernaryOperatorExpression" flags="nn" index="3K4zz7">
@@ -327,7 +327,7 @@
         <property id="1193676396447" name="virtualPackage" index="3GE5qa" />
         <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
       </concept>
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
       <concept id="709746936026466394" name="jetbrains.mps.lang.core.structure.ChildAttribute" flags="ng" index="3VBwX9">
@@ -1766,6 +1766,220 @@
         </node>
       </node>
     </node>
+    <node concept="13i0hz" id="5s__jxCq8Sv" role="13h7CS">
+      <property role="TrG5h" value="putLambdaArg" />
+      <node concept="3Tm1VV" id="5s__jxCq8Sw" role="1B3o_S" />
+      <node concept="3cqZAl" id="5s__jxCq8Sx" role="3clF45" />
+      <node concept="3clFbS" id="5s__jxCq8Sy" role="3clF47">
+        <node concept="3clFbF" id="5s__jxCq8Sz" role="3cqZAp">
+          <node concept="2OqwBi" id="5s__jxCq8S$" role="3clFbG">
+            <node concept="2JrnkZ" id="5s__jxCq8S_" role="2Oq$k0">
+              <node concept="13iPFW" id="5s__jxCq8SA" role="2JrQYb" />
+            </node>
+            <node concept="liA8E" id="5s__jxCq8SB" role="2OqNvi">
+              <ref role="37wK5l" to="mhbf:~SNode.putUserObject(java.lang.Object,java.lang.Object)" resolve="putUserObject" />
+              <node concept="10M0yZ" id="5s__jxCqbTx" role="37wK5m">
+                <ref role="3cqZAo" to="sxpq:5s__jxCpjNV" resolve="USER_OBJECT_KEY_LAMBDAARG" />
+                <ref role="1PxDUh" to="sxpq:5s__jxCoQMv" resolve="ShortLambdaValue" />
+              </node>
+              <node concept="37vLTw" id="5s__jxCq8SD" role="37wK5m">
+                <ref role="3cqZAo" node="5s__jxCqaIo" resolve="lambdaArg" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="37vLTG" id="5s__jxCqaIo" role="3clF46">
+        <property role="TrG5h" value="lambdaArg" />
+        <node concept="3Tqbb2" id="5s__jxCqaIn" role="1tU5fm">
+          <ref role="ehGHo" to="zzzn:6zmBjqUkwse" resolve="LambdaArg" />
+        </node>
+      </node>
+    </node>
+    <node concept="13i0hz" id="5s__jxCqcBE" role="13h7CS">
+      <property role="TrG5h" value="getLambdaArg" />
+      <node concept="3Tm1VV" id="5s__jxCqcBF" role="1B3o_S" />
+      <node concept="3clFbS" id="5s__jxCqcBH" role="3clF47">
+        <node concept="3clFbF" id="5s__jxCqcBI" role="3cqZAp">
+          <node concept="1eOMI4" id="5s__jxCqhoK" role="3clFbG">
+            <node concept="10QFUN" id="5s__jxCqhoH" role="1eOMHV">
+              <node concept="3Tqbb2" id="5s__jxCqhwO" role="10QFUM">
+                <ref role="ehGHo" to="zzzn:6zmBjqUkwse" resolve="LambdaArg" />
+              </node>
+              <node concept="1eOMI4" id="5s__jxCqhcE" role="10QFUP">
+                <node concept="2OqwBi" id="5s__jxCqcBJ" role="1eOMHV">
+                  <node concept="2JrnkZ" id="5s__jxCqcBK" role="2Oq$k0">
+                    <node concept="13iPFW" id="5s__jxCqcBL" role="2JrQYb" />
+                  </node>
+                  <node concept="liA8E" id="5s__jxCqcBM" role="2OqNvi">
+                    <ref role="37wK5l" to="mhbf:~SNode.getUserObject(java.lang.Object)" resolve="getUserObject" />
+                    <node concept="10M0yZ" id="5s__jxCqcBN" role="37wK5m">
+                      <ref role="3cqZAo" to="sxpq:5s__jxCpjNV" resolve="USER_OBJECT_KEY_LAMBDAARG" />
+                      <ref role="1PxDUh" to="sxpq:5s__jxCoQMv" resolve="ShortLambdaValue" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3Tqbb2" id="5s__jxCqcBQ" role="3clF45">
+        <ref role="ehGHo" to="zzzn:6zmBjqUkwse" resolve="LambdaArg" />
+      </node>
+    </node>
+    <node concept="13i0hz" id="XbOhLk5ekn" role="13h7CS">
+      <property role="TrG5h" value="putLambda" />
+      <node concept="3Tm1VV" id="XbOhLk5eko" role="1B3o_S" />
+      <node concept="3cqZAl" id="XbOhLk5ekp" role="3clF45" />
+      <node concept="3clFbS" id="XbOhLk5ekq" role="3clF47">
+        <node concept="3clFbF" id="XbOhLk5ekr" role="3cqZAp">
+          <node concept="2OqwBi" id="XbOhLk5eks" role="3clFbG">
+            <node concept="2JrnkZ" id="XbOhLk5ekt" role="2Oq$k0">
+              <node concept="13iPFW" id="XbOhLk5eku" role="2JrQYb" />
+            </node>
+            <node concept="liA8E" id="XbOhLk5ekv" role="2OqNvi">
+              <ref role="37wK5l" to="mhbf:~SNode.putUserObject(java.lang.Object,java.lang.Object)" resolve="putUserObject" />
+              <node concept="10M0yZ" id="XbOhLk5fLj" role="37wK5m">
+                <ref role="3cqZAo" to="sxpq:XbOhLk4Bsh" resolve="USER_OBJECT_KEY_LAMBDA" />
+                <ref role="1PxDUh" to="sxpq:5s__jxCoQMv" resolve="ShortLambdaValue" />
+              </node>
+              <node concept="37vLTw" id="XbOhLk5ekx" role="37wK5m">
+                <ref role="3cqZAo" node="XbOhLk5eky" resolve="lambdaArg" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="37vLTG" id="XbOhLk5eky" role="3clF46">
+        <property role="TrG5h" value="lambdaArg" />
+        <node concept="3Tqbb2" id="XbOhLk5ekz" role="1tU5fm">
+          <ref role="ehGHo" to="zzzn:6zmBjqUkws6" resolve="LambdaExpression" />
+        </node>
+      </node>
+    </node>
+    <node concept="13i0hz" id="XbOhLk5ek9" role="13h7CS">
+      <property role="TrG5h" value="getLambda" />
+      <node concept="3Tm1VV" id="XbOhLk5eka" role="1B3o_S" />
+      <node concept="3clFbS" id="XbOhLk5ekb" role="3clF47">
+        <node concept="3clFbF" id="XbOhLk5ekc" role="3cqZAp">
+          <node concept="1eOMI4" id="XbOhLk5ekd" role="3clFbG">
+            <node concept="10QFUN" id="XbOhLk5eke" role="1eOMHV">
+              <node concept="3Tqbb2" id="XbOhLk5ekf" role="10QFUM">
+                <ref role="ehGHo" to="zzzn:6zmBjqUkwse" resolve="LambdaArg" />
+              </node>
+              <node concept="1eOMI4" id="XbOhLk5ekg" role="10QFUP">
+                <node concept="2OqwBi" id="XbOhLk5ekh" role="1eOMHV">
+                  <node concept="2JrnkZ" id="XbOhLk5eki" role="2Oq$k0">
+                    <node concept="13iPFW" id="XbOhLk5ekj" role="2JrQYb" />
+                  </node>
+                  <node concept="liA8E" id="XbOhLk5ekk" role="2OqNvi">
+                    <ref role="37wK5l" to="mhbf:~SNode.getUserObject(java.lang.Object)" resolve="getUserObject" />
+                    <node concept="10M0yZ" id="XbOhLk5gsG" role="37wK5m">
+                      <ref role="3cqZAo" to="sxpq:XbOhLk4Bsh" resolve="USER_OBJECT_KEY_LAMBDA" />
+                      <ref role="1PxDUh" to="sxpq:5s__jxCoQMv" resolve="ShortLambdaValue" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3Tqbb2" id="XbOhLk5ekm" role="3clF45">
+        <ref role="ehGHo" to="zzzn:6zmBjqUkws6" resolve="LambdaExpression" />
+      </node>
+    </node>
+    <node concept="13i0hz" id="5s__jxDLZVE" role="13h7CS">
+      <property role="TrG5h" value="getNodeMapping" />
+      <node concept="3Tm1VV" id="5s__jxDLZVF" role="1B3o_S" />
+      <node concept="3rvAFt" id="5s__jxDLZVG" role="3clF45">
+        <node concept="3Tqbb2" id="5s__jxDLZVH" role="3rvQeY" />
+        <node concept="3Tqbb2" id="5s__jxDLZVI" role="3rvSg0" />
+      </node>
+      <node concept="3clFbS" id="5s__jxDLZVJ" role="3clF47">
+        <node concept="3clFbJ" id="5s__jxDLZVK" role="3cqZAp">
+          <node concept="3clFbS" id="5s__jxDLZVL" role="3clFbx">
+            <node concept="3cpWs6" id="5s__jxDLZVM" role="3cqZAp">
+              <node concept="10QFUN" id="5s__jxDLZVN" role="3cqZAk">
+                <node concept="3rvAFt" id="5s__jxDLZVO" role="10QFUM">
+                  <node concept="3Tqbb2" id="5s__jxDLZVP" role="3rvQeY" />
+                  <node concept="3Tqbb2" id="5s__jxDLZVQ" role="3rvSg0" />
+                </node>
+                <node concept="1eOMI4" id="5s__jxDLZVR" role="10QFUP">
+                  <node concept="2OqwBi" id="5s__jxDLZVS" role="1eOMHV">
+                    <node concept="2JrnkZ" id="5s__jxDLZVT" role="2Oq$k0">
+                      <node concept="13iPFW" id="5s__jxDLZVU" role="2JrQYb" />
+                    </node>
+                    <node concept="liA8E" id="5s__jxDLZVV" role="2OqNvi">
+                      <ref role="37wK5l" to="mhbf:~SNode.getUserObject(java.lang.Object)" resolve="getUserObject" />
+                      <node concept="10M0yZ" id="5s__jxDLZVW" role="37wK5m">
+                        <ref role="3cqZAo" to="sxpq:6ITtBskT0za" resolve="USER_OBJECT_KEY" />
+                        <ref role="1PxDUh" to="sxpq:$yb$20f$a5" resolve="LambdaValue" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="2ZW3vV" id="5s__jxDLZVX" role="3clFbw">
+            <node concept="2OqwBi" id="5s__jxDLZVY" role="2ZW6bz">
+              <node concept="2JrnkZ" id="5s__jxDLZVZ" role="2Oq$k0">
+                <node concept="13iPFW" id="5s__jxDLZW0" role="2JrQYb" />
+              </node>
+              <node concept="liA8E" id="5s__jxDLZW1" role="2OqNvi">
+                <ref role="37wK5l" to="mhbf:~SNode.getUserObject(java.lang.Object)" resolve="getUserObject" />
+                <node concept="10M0yZ" id="5s__jxDLZW2" role="37wK5m">
+                  <ref role="3cqZAo" to="sxpq:6ITtBskT0za" resolve="USER_OBJECT_KEY" />
+                  <ref role="1PxDUh" to="sxpq:$yb$20f$a5" resolve="LambdaValue" />
+                </node>
+              </node>
+            </node>
+            <node concept="3uibUv" id="5s__jxDLZW3" role="2ZW6by">
+              <ref role="3uigEE" to="33ny:~Map" resolve="Map" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs6" id="5s__jxDLZW4" role="3cqZAp">
+          <node concept="10Nm6u" id="5s__jxDLZW5" role="3cqZAk" />
+        </node>
+      </node>
+      <node concept="2AHcQZ" id="5s__jxDLZW6" role="2AJF6D">
+        <ref role="2AI5Lk" to="mhfm:~Nullable" resolve="Nullable" />
+      </node>
+    </node>
+    <node concept="13i0hz" id="5s__jxDLZW7" role="13h7CS">
+      <property role="TrG5h" value="putNodeMapping" />
+      <node concept="3Tm1VV" id="5s__jxDLZW8" role="1B3o_S" />
+      <node concept="3cqZAl" id="5s__jxDLZW9" role="3clF45" />
+      <node concept="3clFbS" id="5s__jxDLZWa" role="3clF47">
+        <node concept="3clFbF" id="5s__jxDLZWb" role="3cqZAp">
+          <node concept="2OqwBi" id="5s__jxDLZWc" role="3clFbG">
+            <node concept="2JrnkZ" id="5s__jxDLZWd" role="2Oq$k0">
+              <node concept="13iPFW" id="5s__jxDLZWe" role="2JrQYb" />
+            </node>
+            <node concept="liA8E" id="5s__jxDLZWf" role="2OqNvi">
+              <ref role="37wK5l" to="mhbf:~SNode.putUserObject(java.lang.Object,java.lang.Object)" resolve="putUserObject" />
+              <node concept="10M0yZ" id="5s__jxDLZWg" role="37wK5m">
+                <ref role="3cqZAo" to="sxpq:6ITtBskT0za" resolve="USER_OBJECT_KEY" />
+                <ref role="1PxDUh" to="sxpq:$yb$20f$a5" resolve="LambdaValue" />
+              </node>
+              <node concept="37vLTw" id="5s__jxDLZWh" role="37wK5m">
+                <ref role="3cqZAo" node="5s__jxDLZWi" resolve="map" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="37vLTG" id="5s__jxDLZWi" role="3clF46">
+        <property role="TrG5h" value="map" />
+        <node concept="3rvAFt" id="5s__jxDLZWj" role="1tU5fm">
+          <node concept="3Tqbb2" id="5s__jxDLZWk" role="3rvQeY" />
+          <node concept="3Tqbb2" id="5s__jxDLZWl" role="3rvSg0" />
+        </node>
+      </node>
+    </node>
   </node>
   <node concept="13h7C7" id="6zmBjqUmsve">
     <property role="3GE5qa" value="lambda" />
diff --git a/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/plugin.mps b/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/plugin.mps
index 309fb2e962..44b30d5370 100644
--- a/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/plugin.mps
+++ b/code/languages/org.iets3.opensource/languages/org.iets3.core.expr.lambda/models/plugin.mps
@@ -20,9 +20,6 @@
   </imports>
   <registry>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
-      <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
-        <child id="1082485599096" name="statements" index="9aQI4" />
-      </concept>
       <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
         <child id="1068498886297" name="rValue" index="37vLTx" />
         <child id="1068498886295" name="lValue" index="37vLTJ" />
@@ -101,8 +98,8 @@
       <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
         <child id="1068580123156" name="expression" index="3clFbG" />
       </concept>
+      <concept id="1068580123157" name="jetbrains.mps.baseLanguage.structure.Statement" flags="nn" index="3clFbH" />
       <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
-        <child id="1082485599094" name="ifFalseStatement" index="9aQIa" />
         <child id="1068580123160" name="condition" index="3clFbw" />
         <child id="1068580123161" name="ifTrue" index="3clFbx" />
       </concept>
@@ -153,9 +150,13 @@
         <child id="1144231399730" name="condition" index="1Dwp0S" />
         <child id="1144231408325" name="iteration" index="1Dwrff" />
       </concept>
+      <concept id="6329021646629104954" name="jetbrains.mps.baseLanguage.structure.SingleLineComment" flags="nn" index="3SKdUt">
+        <child id="8356039341262087992" name="line" index="1aUNEU" />
+      </concept>
       <concept id="1146644602865" name="jetbrains.mps.baseLanguage.structure.PublicVisibility" flags="nn" index="3Tm1VV" />
       <concept id="1146644623116" name="jetbrains.mps.baseLanguage.structure.PrivateVisibility" flags="nn" index="3Tm6S6" />
       <concept id="1146644641414" name="jetbrains.mps.baseLanguage.structure.ProtectedVisibility" flags="nn" index="3Tmbuc" />
+      <concept id="1080120340718" name="jetbrains.mps.baseLanguage.structure.AndExpression" flags="nn" index="1Wc70l" />
     </language>
     <language id="fd392034-7849-419d-9071-12563d152375" name="jetbrains.mps.baseLanguage.closures">
       <concept id="2524418899405758586" name="jetbrains.mps.baseLanguage.closures.structure.InferredClosureParameterDeclaration" flags="ig" index="gl6BB" />
@@ -169,6 +170,10 @@
         <reference id="5455284157994012188" name="link" index="2pIpSl" />
         <child id="1595412875168045827" name="initValue" index="28nt2d" />
       </concept>
+      <concept id="5455284157993911077" name="jetbrains.mps.lang.quotation.structure.NodeBuilderInitProperty" flags="ng" index="2pJxcG">
+        <reference id="5455284157993911078" name="property" index="2pJxcJ" />
+        <child id="1595412875168045201" name="initValue" index="28ntcv" />
+      </concept>
       <concept id="5455284157993863837" name="jetbrains.mps.lang.quotation.structure.NodeBuilder" flags="nn" index="2pJPEk">
         <child id="5455284157993863838" name="quotedNode" index="2pJPEn" />
       </concept>
@@ -176,6 +181,9 @@
         <reference id="5455284157993910961" name="concept" index="2pJxaS" />
         <child id="5455284157993911099" name="values" index="2pJxcM" />
       </concept>
+      <concept id="6985522012210254362" name="jetbrains.mps.lang.quotation.structure.NodeBuilderPropertyExpression" flags="nn" index="WxPPo">
+        <child id="6985522012210254363" name="expression" index="WxPPp" />
+      </concept>
       <concept id="8182547171709752110" name="jetbrains.mps.lang.quotation.structure.NodeBuilderExpression" flags="nn" index="36biLy">
         <child id="8182547171709752112" name="expression" index="36biLW" />
       </concept>
@@ -199,6 +207,9 @@
         <reference id="1145383142433" name="elementConcept" index="2I9WkF" />
       </concept>
       <concept id="1171305280644" name="jetbrains.mps.lang.smodel.structure.Node_GetDescendantsOperation" flags="nn" index="2Rf3mk" />
+      <concept id="1171407110247" name="jetbrains.mps.lang.smodel.structure.Node_GetAncestorOperation" flags="nn" index="2Xjw5R" />
+      <concept id="1139613262185" name="jetbrains.mps.lang.smodel.structure.Node_GetParentOperation" flags="nn" index="1mfA1w" />
+      <concept id="1171999116870" name="jetbrains.mps.lang.smodel.structure.Node_IsNullOperation" flags="nn" index="3w_OXm" />
       <concept id="1144100932627" name="jetbrains.mps.lang.smodel.structure.OperationParm_Inclusion" flags="ng" index="1xIGOp" />
       <concept id="1144101972840" name="jetbrains.mps.lang.smodel.structure.OperationParm_Concept" flags="ng" index="1xMEDy">
         <child id="1207343664468" name="conceptArgument" index="ri$Ld" />
@@ -231,6 +242,14 @@
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
+    <language id="c7fb639f-be78-4307-89b0-b5959c3fa8c8" name="jetbrains.mps.lang.text">
+      <concept id="155656958578482948" name="jetbrains.mps.lang.text.structure.Word" flags="nn" index="3oM_SD">
+        <property id="155656958578482949" name="value" index="3oM_SC" />
+      </concept>
+      <concept id="2535923850359271782" name="jetbrains.mps.lang.text.structure.Line" flags="nn" index="1PaTwC">
+        <child id="2535923850359271783" name="elements" index="1PaTwD" />
+      </concept>
+    </language>
     <language id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections">
       <concept id="1204796164442" name="jetbrains.mps.baseLanguage.collections.structure.InternalSequenceOperation" flags="nn" index="23sCx2">
         <child id="1204796294226" name="closure" index="23t8la" />
@@ -261,6 +280,7 @@
       <concept id="1237721394592" name="jetbrains.mps.baseLanguage.collections.structure.AbstractContainerCreator" flags="nn" index="HWqM0">
         <child id="1237721435807" name="elementType" index="HW$YZ" />
       </concept>
+      <concept id="1227022210526" name="jetbrains.mps.baseLanguage.collections.structure.ClearAllElementsOperation" flags="nn" index="2Kehj3" />
       <concept id="1160600644654" name="jetbrains.mps.baseLanguage.collections.structure.ListCreatorWithInit" flags="nn" index="Tc6Ow" />
       <concept id="1160612413312" name="jetbrains.mps.baseLanguage.collections.structure.AddElementOperation" flags="nn" index="TSZUe" />
       <concept id="1160666733551" name="jetbrains.mps.baseLanguage.collections.structure.AddAllElementsOperation" flags="nn" index="X8dFx" />
@@ -296,7 +316,7 @@
       <node concept="3Tm1VV" id="6ITtBskSWbF" role="1B3o_S" />
       <node concept="17QB3L" id="6ITtBskT0bQ" role="1tU5fm" />
       <node concept="Xl_RD" id="6ITtBskT2G0" role="33vP2m">
-        <property role="Xl_RC" value="shortLambdaMapping" />
+        <property role="Xl_RC" value="LambdaMapping" />
       </node>
     </node>
     <node concept="312cEg" id="$yb$20fATA" role="jymVt">
@@ -356,92 +376,53 @@
       <node concept="3cqZAl" id="$yb$20fE3B" role="3clF45" />
       <node concept="3Tm1VV" id="$yb$20fE3C" role="1B3o_S" />
       <node concept="3clFbS" id="$yb$20fE3D" role="3clF47">
-        <node concept="3clFbF" id="3u8VfJfq07n" role="3cqZAp">
-          <node concept="37vLTI" id="3u8VfJfq1JI" role="3clFbG">
-            <node concept="2OqwBi" id="3u8VfJfq4DF" role="37vLTx">
-              <node concept="37vLTw" id="3u8VfJfq3hs" role="2Oq$k0">
-                <ref role="3cqZAo" node="$yb$20fE4t" resolve="le" />
-              </node>
-              <node concept="2qgKlT" id="3u8VfJfq6pn" role="2OqNvi">
-                <ref role="37wK5l" to="5s8v:3u8VfJfplfS" resolve="getNodeMapping" />
+        <node concept="3clFbF" id="3u8VfJfqhGS" role="3cqZAp">
+          <node concept="37vLTI" id="3u8VfJfqj6G" role="3clFbG">
+            <node concept="2ShNRf" id="3u8VfJfqkHA" role="37vLTx">
+              <node concept="3rGOSV" id="3u8VfJfqkFP" role="2ShVmc">
+                <node concept="3Tqbb2" id="3u8VfJfqkFQ" role="3rHrn6" />
+                <node concept="3Tqbb2" id="3u8VfJfqkFR" role="3rHtpV" />
               </node>
             </node>
-            <node concept="37vLTw" id="3u8VfJfq07l" role="37vLTJ">
+            <node concept="37vLTw" id="3u8VfJfqhGQ" role="37vLTJ">
               <ref role="3cqZAo" node="dsAFRk0GB0" resolve="mapping" />
             </node>
           </node>
         </node>
-        <node concept="3clFbJ" id="3u8VfJfqbfu" role="3cqZAp">
-          <node concept="3clFbS" id="3u8VfJfqbfw" role="3clFbx">
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-              <node concept="37vLTI" id="3u8VfJfqj6G" role="3clFbG">
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-                    <node concept="3Tqbb2" id="3u8VfJfqkFQ" role="3rHrn6" />
-                    <node concept="3Tqbb2" id="3u8VfJfqkFR" role="3rHtpV" />
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-                <node concept="37vLTw" id="3u8VfJfqhGQ" role="37vLTJ">
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-            <node concept="3clFbF" id="1ZCJf$ejaT0" role="3cqZAp">
-              <node concept="2OqwBi" id="1ZCJf$ejdxs" role="3clFbG">
-                <node concept="37vLTw" id="1ZCJf$ejaSY" role="2Oq$k0">
-                  <ref role="3cqZAo" node="$yb$20fE4t" resolve="le" />
-                </node>
-                <node concept="2qgKlT" id="1ZCJf$ejg$k" role="2OqNvi">
-                  <ref role="37wK5l" to="5s8v:1ZCJf$ej28Z" resolve="putNodeMapping" />
-                  <node concept="37vLTw" id="1ZCJf$ejhqU" role="37wK5m">
-                    <ref role="3cqZAo" node="dsAFRk0GB0" resolve="mapping" />
-                  </node>
-                </node>
-              </node>
+        <node concept="3clFbF" id="1ZCJf$ejaT0" role="3cqZAp">
+          <node concept="2OqwBi" id="1ZCJf$ejdxs" role="3clFbG">
+            <node concept="37vLTw" id="1ZCJf$ejaSY" role="2Oq$k0">
+              <ref role="3cqZAo" node="$yb$20fE4t" resolve="le" />
             </node>
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-                </node>
-                <node concept="1PxgMI" id="14bmjk2oWAH" role="37vLTx">
-                  <property role="1BlNFB" value="true" />
-                  <node concept="chp4Y" id="14bmjk2oWAI" role="3oSUPX">
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-                  <node concept="2YIFZM" id="14bmjk2oWAJ" role="1m5AlR">
-                    <ref role="1Pybhc" to="w1kc:~CopyUtil" resolve="CopyUtil" />
-                    <ref role="37wK5l" to="w1kc:~CopyUtil.copy(org.jetbrains.mps.openapi.model.SNode,java.util.Map,boolean)" resolve="copy" />
-                    <node concept="37vLTw" id="14bmjk2oWAK" role="37wK5m">
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-                    <node concept="3clFbT" id="14bmjk2oWAM" role="37wK5m">
-                      <property role="3clFbU" value="true" />
-                    </node>
-                  </node>
-                </node>
+            <node concept="2qgKlT" id="1ZCJf$ejg$k" role="2OqNvi">
+              <ref role="37wK5l" to="5s8v:1ZCJf$ej28Z" resolve="putNodeMapping" />
+              <node concept="37vLTw" id="1ZCJf$ejhqU" role="37wK5m">
+                <ref role="3cqZAo" node="dsAFRk0GB0" resolve="mapping" />
               </node>
             </node>
           </node>
-          <node concept="3clFbC" id="3u8VfJfqeg9" role="3clFbw">
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-              <ref role="3cqZAo" node="dsAFRk0GB0" resolve="mapping" />
+        </node>
+        <node concept="3clFbF" id="dsAFRk0SAw" role="3cqZAp">
+          <node concept="37vLTI" id="dsAFRk0Ts4" role="3clFbG">
+            <node concept="37vLTw" id="dsAFRk0SAu" role="37vLTJ">
+              <ref role="3cqZAo" node="$yb$20fATA" resolve="lambda" />
             </node>
-          </node>
-          <node concept="9aQIb" id="14bmjk2p0S6" role="9aQIa">
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-                  <node concept="37vLTw" id="14bmjk2y_S4" role="37vLTx">
-                    <ref role="3cqZAo" node="$yb$20fE4t" resolve="le" />
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-                  <node concept="37vLTw" id="14bmjk2p2qN" role="37vLTJ">
-                    <ref role="3cqZAo" node="$yb$20fATA" resolve="lambda" />
-                  </node>
+            <node concept="1PxgMI" id="14bmjk2oWAH" role="37vLTx">
+              <property role="1BlNFB" value="true" />
+              <node concept="chp4Y" id="14bmjk2oWAI" role="3oSUPX">
+                <ref role="cht4Q" to="zzzn:6zmBjqUkws6" resolve="LambdaExpression" />
+              </node>
+              <node concept="2YIFZM" id="14bmjk2oWAJ" role="1m5AlR">
+                <ref role="1Pybhc" to="w1kc:~CopyUtil" resolve="CopyUtil" />
+                <ref role="37wK5l" to="w1kc:~CopyUtil.copy(org.jetbrains.mps.openapi.model.SNode,java.util.Map,boolean)" resolve="copy" />
+                <node concept="37vLTw" id="14bmjk2oWAK" role="37wK5m">
+                  <ref role="3cqZAo" node="$yb$20fE4t" resolve="le" />
+                </node>
+                <node concept="37vLTw" id="14bmjk2oWAL" role="37wK5m">
+                  <ref role="3cqZAo" node="dsAFRk0GB0" resolve="mapping" />
+                </node>
+                <node concept="3clFbT" id="14bmjk2oWAM" role="37wK5m">
+                  <property role="3clFbU" value="true" />
                 </node>
               </node>
             </node>
@@ -1014,14 +995,6 @@
               <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
             </node>
             <node concept="2OqwBi" id="$yb$20l8Hx" role="33vP2m">
-              <node concept="2OqwBi" id="$yb$20l8Hy" role="2Oq$k0">
-                <node concept="37vLTw" id="$yb$20l8Hz" role="2Oq$k0">
-                  <ref role="3cqZAo" node="$yb$20l8GT" resolve="context" />
-                </node>
-                <node concept="liA8E" id="$yb$20l8H$" role="2OqNvi">
-                  <ref role="37wK5l" to="2ahs:2ALJBcrni7v" resolve="getRootInterpreter" />
-                </node>
-              </node>
               <node concept="liA8E" id="$yb$20l8H_" role="2OqNvi">
                 <ref role="37wK5l" to="2ahs:2X4$XGmegKw" resolve="evaluate" />
                 <node concept="2OqwBi" id="7lHetQyBwnX" role="37wK5m">
@@ -1045,9 +1018,18 @@
                   <ref role="3cqZAo" node="5ya_dKpjuUl" resolve="stopOnStop" />
                 </node>
               </node>
+              <node concept="2OqwBi" id="1joq1DK9lUe" role="2Oq$k0">
+                <node concept="37vLTw" id="1joq1DK9lUf" role="2Oq$k0">
+                  <ref role="3cqZAo" node="$yb$20l8GT" resolve="context" />
+                </node>
+                <node concept="liA8E" id="1joq1DK9lUg" role="2OqNvi">
+                  <ref role="37wK5l" to="2ahs:2ALJBcrni7v" resolve="getRootInterpreter" />
+                </node>
+              </node>
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="2gng9$EZFEs" role="3cqZAp" />
         <node concept="3clFbF" id="dsAFRk0Yco" role="3cqZAp">
           <node concept="2OqwBi" id="dsAFRk15Sz" role="3clFbG">
             <node concept="2OqwBi" id="dsAFRk11WP" role="2Oq$k0">
@@ -2476,5 +2458,1206 @@
       </node>
     </node>
   </node>
+  <node concept="312cEu" id="5s__jxCoQMv">
+    <property role="TrG5h" value="ShortLambdaValue" />
+    <node concept="Wx3nA" id="3fi3fTlpKtk" role="jymVt">
+      <property role="TrG5h" value="USER_OBJECT_KEY_MAPPING" />
+      <property role="3TUv4t" value="true" />
+      <node concept="3Tm1VV" id="3fi3fTlpKtl" role="1B3o_S" />
+      <node concept="17QB3L" id="3fi3fTlpKtm" role="1tU5fm" />
+      <node concept="Xl_RD" id="3fi3fTlpKtn" role="33vP2m">
+        <property role="Xl_RC" value="ShortLambdaMapping" />
+      </node>
+    </node>
+    <node concept="Wx3nA" id="5s__jxCpjNV" role="jymVt">
+      <property role="TrG5h" value="USER_OBJECT_KEY_LAMBDAARG" />
+      <property role="3TUv4t" value="true" />
+      <node concept="3Tm1VV" id="5s__jxCpjNW" role="1B3o_S" />
+      <node concept="17QB3L" id="5s__jxCpjNX" role="1tU5fm" />
+      <node concept="Xl_RD" id="5s__jxCpjNY" role="33vP2m">
+        <property role="Xl_RC" value="LambdaArg" />
+      </node>
+    </node>
+    <node concept="Wx3nA" id="XbOhLk4Bsh" role="jymVt">
+      <property role="TrG5h" value="USER_OBJECT_KEY_LAMBDA" />
+      <property role="3TUv4t" value="true" />
+      <node concept="3Tm1VV" id="XbOhLk4Bsi" role="1B3o_S" />
+      <node concept="17QB3L" id="XbOhLk4Bsj" role="1tU5fm" />
+      <node concept="Xl_RD" id="XbOhLk4Bsk" role="33vP2m">
+        <property role="Xl_RC" value="Lambda" />
+      </node>
+    </node>
+    <node concept="312cEg" id="3fi3fTlpKto" role="jymVt">
+      <property role="34CwA1" value="false" />
+      <property role="eg7rD" value="false" />
+      <property role="TrG5h" value="lambda" />
+      <property role="3TUv4t" value="false" />
+      <node concept="3Tm6S6" id="3fi3fTlpKtp" role="1B3o_S" />
+      <node concept="3Tqbb2" id="3fi3fTlpKtq" role="1tU5fm">
+        <ref role="ehGHo" to="zzzn:6zmBjqUkws6" resolve="LambdaExpression" />
+      </node>
+      <node concept="10Nm6u" id="3fi3fTlpKtr" role="33vP2m" />
+    </node>
+    <node concept="312cEg" id="IFu7oT5N0i" role="jymVt">
+      <property role="TrG5h" value="shortLambda" />
+      <node concept="3Tm6S6" id="IFu7oT5HUn" role="1B3o_S" />
+      <node concept="3Tqbb2" id="IFu7oT5MiZ" role="1tU5fm">
+        <ref role="ehGHo" to="zzzn:6zmBjqUm7MQ" resolve="ShortLambdaExpression" />
+      </node>
+      <node concept="10Nm6u" id="IFu7oT5OBc" role="33vP2m" />
+    </node>
+    <node concept="312cEg" id="3fi3fTlpKts" role="jymVt">
+      <property role="TrG5h" value="mapping" />
+      <node concept="3Tm6S6" id="3fi3fTlpKtt" role="1B3o_S" />
+      <node concept="3rvAFt" id="3fi3fTlpKtu" role="1tU5fm">
+        <node concept="3Tqbb2" id="3fi3fTlpKtv" role="3rvQeY" />
+        <node concept="3Tqbb2" id="3fi3fTlpKtw" role="3rvSg0" />
+      </node>
+    </node>
+    <node concept="312cEg" id="3fi3fTlpKtx" role="jymVt">
+      <property role="34CwA1" value="false" />
+      <property role="eg7rD" value="false" />
+      <property role="TrG5h" value="stopOnStop" />
+      <property role="3TUv4t" value="false" />
+      <node concept="3Tm6S6" id="3fi3fTlpKty" role="1B3o_S" />
+      <node concept="10P_77" id="3fi3fTlpKtz" role="1tU5fm" />
+      <node concept="3clFbT" id="3fi3fTlpKt$" role="33vP2m">
+        <property role="3clFbU" value="false" />
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3fi3fTlpKt_" role="jymVt" />
+    <node concept="3clFbW" id="3fi3fTlpKtB" role="jymVt">
+      <node concept="37vLTG" id="3fi3fTlpKtC" role="3clF46">
+        <property role="TrG5h" value="le" />
+        <node concept="3Tqbb2" id="3fi3fTlpKtD" role="1tU5fm">
+          <ref role="ehGHo" to="zzzn:6zmBjqUm7MQ" resolve="ShortLambdaExpression" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKtE" role="3clF46">
+        <property role="TrG5h" value="ctx" />
+        <node concept="3uibUv" id="3fi3fTlpKtF" role="1tU5fm">
+          <ref role="3uigEE" to="2ahs:4X7QcQ31ENp" resolve="IContext" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKtG" role="3clF46">
+        <property role="TrG5h" value="coverage" />
+        <node concept="3uibUv" id="3fi3fTlpKtH" role="1tU5fm">
+          <ref role="3uigEE" to="2ahs:4_qY3E5ifTh" resolve="ICoverageAnalyzer" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKtI" role="3clF46">
+        <property role="TrG5h" value="stopOnStop" />
+        <node concept="10P_77" id="3fi3fTlpKtJ" role="1tU5fm" />
+      </node>
+      <node concept="3cqZAl" id="3fi3fTlpKtK" role="3clF45" />
+      <node concept="3Tm1VV" id="3fi3fTlpKtL" role="1B3o_S" />
+      <node concept="3clFbS" id="3fi3fTlpKtM" role="3clF47">
+        <node concept="3clFbF" id="3fi3fTlpKtZ" role="3cqZAp">
+          <node concept="37vLTI" id="3fi3fTlpKu0" role="3clFbG">
+            <node concept="2ShNRf" id="3fi3fTlpKu1" role="37vLTx">
+              <node concept="3rGOSV" id="3fi3fTlpKu2" role="2ShVmc">
+                <node concept="3Tqbb2" id="3fi3fTlpKu3" role="3rHrn6" />
+                <node concept="3Tqbb2" id="3fi3fTlpKu4" role="3rHtpV" />
+              </node>
+            </node>
+            <node concept="37vLTw" id="3fi3fTlpKu5" role="37vLTJ">
+              <ref role="3cqZAo" node="3fi3fTlpKts" resolve="mapping" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="5s__jxDMlw_" role="3cqZAp">
+          <node concept="2OqwBi" id="5s__jxDMnsI" role="3clFbG">
+            <node concept="37vLTw" id="5s__jxDMlwz" role="2Oq$k0">
+              <ref role="3cqZAo" node="3fi3fTlpKtC" resolve="le" />
+            </node>
+            <node concept="2qgKlT" id="5s__jxDMpZv" role="2OqNvi">
+              <ref role="37wK5l" to="5s8v:5s__jxDLZW7" resolve="putNodeMapping" />
+              <node concept="37vLTw" id="5s__jxDMrR0" role="37wK5m">
+                <ref role="3cqZAo" node="3fi3fTlpKts" resolve="mapping" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="IFu7oT5Pm9" role="3cqZAp">
+          <node concept="37vLTI" id="IFu7oT5SZo" role="3clFbG">
+            <node concept="37vLTw" id="IFu7oT5UMB" role="37vLTx">
+              <ref role="3cqZAo" node="3fi3fTlpKtC" resolve="le" />
+            </node>
+            <node concept="37vLTw" id="IFu7oT5Pm7" role="37vLTJ">
+              <ref role="3cqZAo" node="IFu7oT5N0i" resolve="shortLambda" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="XbOhLk5rQG" role="3cqZAp">
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+        <node concept="_YKpA" id="3fi3fTlpKwN" role="1tU5fm">
+          <node concept="3uibUv" id="3fi3fTlpKwO" role="_ZDj9">
+            <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
+          </node>
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKwP" role="3clF46">
+        <property role="TrG5h" value="context" />
+        <node concept="3uibUv" id="3fi3fTlpKwQ" role="1tU5fm">
+          <ref role="3uigEE" to="2ahs:4X7QcQ31ENp" resolve="IContext" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKwR" role="3clF46">
+        <property role="TrG5h" value="coverage" />
+        <node concept="3uibUv" id="3fi3fTlpKwS" role="1tU5fm">
+          <ref role="3uigEE" to="2ahs:4_qY3E5ifTh" resolve="ICoverageAnalyzer" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKwT" role="3clF46">
+        <property role="TrG5h" value="contextTrace" />
+        <node concept="3uibUv" id="3fi3fTlpKwU" role="1tU5fm">
+          <ref role="3uigEE" to="2ahs:7cNsFS_gTK8" resolve="ComputationTrace" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="3fi3fTlpKwV" role="3clF46">
+        <property role="TrG5h" value="stopOnStop" />
+        <node concept="10P_77" id="3fi3fTlpKwW" role="1tU5fm" />
+      </node>
+      <node concept="3clFbS" id="3fi3fTlpKwX" role="3clF47">
+        <node concept="3clFbF" id="3fi3fTlpKwY" role="3cqZAp">
+          <node concept="2OqwBi" id="3fi3fTlpKwZ" role="3clFbG">
+            <node concept="37vLTw" id="3fi3fTlpKx0" role="2Oq$k0">
+              <ref role="3cqZAo" node="3fi3fTlpKwP" resolve="context" />
+            </node>
+            <node concept="liA8E" id="3fi3fTlpKx1" role="2OqNvi">
+              <ref role="37wK5l" to="2ahs:2pAf7L4El8y" resolve="pushEnvironment" />
+              <node concept="37vLTw" id="3fi3fTlpKx2" role="37wK5m">
+                <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+              </node>
+              <node concept="10Nm6u" id="3fi3fTlpKx3" role="37wK5m" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="XbOhLjWYwG" role="3cqZAp" />
+        <node concept="3clFbF" id="IFu7oT5oCH" role="3cqZAp">
+          <node concept="2OqwBi" id="IFu7oT5oCI" role="3clFbG">
+            <node concept="2OqwBi" id="IFu7oT5oCJ" role="2Oq$k0">
+              <node concept="37vLTw" id="IFu7oT5oCK" role="2Oq$k0">
+                <ref role="3cqZAo" node="3fi3fTlpKwP" resolve="context" />
+              </node>
+              <node concept="liA8E" id="IFu7oT5oCL" role="2OqNvi">
+                <ref role="37wK5l" to="2ahs:2X4$XGmeh8R" resolve="getEnvironment" />
+              </node>
+            </node>
+            <node concept="liA8E" id="IFu7oT5oCM" role="2OqNvi">
+              <ref role="37wK5l" to="33ny:~Map.put(java.lang.Object,java.lang.Object)" resolve="put" />
+              <node concept="2OqwBi" id="IFu7oT5oCN" role="37wK5m">
+                <node concept="2OqwBi" id="IFu7oT5oCO" role="2Oq$k0">
+                  <node concept="37vLTw" id="IFu7oT5oCP" role="2Oq$k0">
+                    <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+                  </node>
+                  <node concept="3Tsc0h" id="IFu7oT5oCQ" role="2OqNvi">
+                    <ref role="3TtcxE" to="zzzn:6zmBjqUkws7" resolve="args" />
+                  </node>
+                </node>
+                <node concept="34jXtK" id="IFu7oT5oCR" role="2OqNvi">
+                  <node concept="3cmrfG" id="IFu7oT5vCj" role="25WWJ7">
+                    <property role="3cmrfH" value="0" />
+                  </node>
+                </node>
+              </node>
+              <node concept="2OqwBi" id="IFu7oT5oCT" role="37wK5m">
+                <node concept="37vLTw" id="IFu7oT5oCU" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3fi3fTlpKwM" resolve="evaluatedArgs" />
+                </node>
+                <node concept="34jXtK" id="IFu7oT5oCV" role="2OqNvi">
+                  <node concept="3cmrfG" id="IFu7oT5ygO" role="25WWJ7">
+                    <property role="3cmrfH" value="0" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3fi3fTlpKy6" role="3cqZAp">
+          <node concept="3cpWsn" id="3fi3fTlpKy7" role="3cpWs9">
+            <property role="TrG5h" value="tt" />
+            <node concept="3uibUv" id="3fi3fTlpKy8" role="1tU5fm">
+              <ref role="3uigEE" to="2ahs:7cNsFS_gTK8" resolve="ComputationTrace" />
+            </node>
+            <node concept="2ShNRf" id="3fi3fTlpKy9" role="33vP2m">
+              <node concept="1pGfFk" id="3fi3fTlpKya" role="2ShVmc">
+                <ref role="37wK5l" to="2ahs:5d4Vabvrrqt" resolve="ComputationTrace" />
+                <node concept="37vLTw" id="3fi3fTlpKyb" role="37wK5m">
+                  <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+                </node>
+                <node concept="3clFbT" id="3fi3fTlpKyc" role="37wK5m" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3fi3fTlpKyd" role="3cqZAp">
+          <node concept="2OqwBi" id="3fi3fTlpKye" role="3clFbG">
+            <node concept="37vLTw" id="3fi3fTlpKyf" role="2Oq$k0">
+              <ref role="3cqZAo" node="3fi3fTlpKwT" resolve="contextTrace" />
+            </node>
+            <node concept="liA8E" id="3fi3fTlpKyg" role="2OqNvi">
+              <ref role="37wK5l" to="2ahs:1FJItavexS7" resolve="addChild" />
+              <node concept="37vLTw" id="3fi3fTlpKyh" role="37wK5m">
+                <ref role="3cqZAo" node="3fi3fTlpKy7" resolve="tt" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="5s__jxCsPC6" role="3cqZAp">
+          <node concept="3cpWsn" id="5s__jxCsPC7" role="3cpWs9">
+            <property role="TrG5h" value="res" />
+            <node concept="3uibUv" id="5s__jxCsPC8" role="1tU5fm">
+              <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
+            </node>
+            <node concept="2OqwBi" id="5s__jxCsPC9" role="33vP2m">
+              <node concept="liA8E" id="5s__jxCsPCb" role="2OqNvi">
+                <ref role="37wK5l" to="2ahs:2X4$XGmegKw" resolve="evaluate" />
+                <node concept="2OqwBi" id="5s__jxCsPCc" role="37wK5m">
+                  <node concept="37vLTw" id="5s__jxCsPCd" role="2Oq$k0">
+                    <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+                  </node>
+                  <node concept="3TrEf2" id="5s__jxCsPCe" role="2OqNvi">
+                    <ref role="3Tt5mk" to="zzzn:6zmBjqUkwH3" resolve="expression" />
+                  </node>
+                </node>
+                <node concept="37vLTw" id="5s__jxCsPCf" role="37wK5m">
+                  <ref role="3cqZAo" node="3fi3fTlpKwP" resolve="context" />
+                </node>
+                <node concept="37vLTw" id="5s__jxCsPCg" role="37wK5m">
+                  <ref role="3cqZAo" node="3fi3fTlpKwR" resolve="coverage" />
+                </node>
+                <node concept="37vLTw" id="5s__jxCsPCh" role="37wK5m">
+                  <ref role="3cqZAo" node="3fi3fTlpKy7" resolve="tt" />
+                </node>
+                <node concept="37vLTw" id="5s__jxCsPCi" role="37wK5m">
+                  <ref role="3cqZAo" node="3fi3fTlpKwV" resolve="stopOnStop" />
+                </node>
+              </node>
+              <node concept="2OqwBi" id="5s__jxCsPC3" role="2Oq$k0">
+                <node concept="37vLTw" id="5s__jxCsPC4" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3fi3fTlpKwP" resolve="context" />
+                </node>
+                <node concept="liA8E" id="5s__jxCsPC5" role="2OqNvi">
+                  <ref role="37wK5l" to="2ahs:2ALJBcrni7v" resolve="getRootInterpreter" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="3fi3fTpCAjY" role="3cqZAp" />
+        <node concept="3clFbF" id="3fi3fTlpKyx" role="3cqZAp">
+          <node concept="2OqwBi" id="3fi3fTlpKyy" role="3clFbG">
+            <node concept="2OqwBi" id="3fi3fTlpKyz" role="2Oq$k0">
+              <node concept="37vLTw" id="3fi3fTlpKy$" role="2Oq$k0">
+                <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+              </node>
+              <node concept="2Rf3mk" id="3fi3fTlpKy_" role="2OqNvi">
+                <node concept="1xIGOp" id="3fi3fTlpKyA" role="1xVPHs" />
+              </node>
+            </node>
+            <node concept="2es0OD" id="3fi3fTlpKyB" role="2OqNvi">
+              <node concept="1bVj0M" id="3fi3fTlpKyC" role="23t8la">
+                <node concept="3clFbS" id="3fi3fTlpKyD" role="1bW5cS">
+                  <node concept="3clFbF" id="3fi3fTlpKyE" role="3cqZAp">
+                    <node concept="2OqwBi" id="3fi3fTlpKyF" role="3clFbG">
+                      <node concept="37vLTw" id="3fi3fTlpKyG" role="2Oq$k0">
+                        <ref role="3cqZAo" node="3fi3fTlpKts" resolve="mapping" />
+                      </node>
+                      <node concept="2es0OD" id="3fi3fTlpKyH" role="2OqNvi">
+                        <node concept="1bVj0M" id="3fi3fTlpKyI" role="23t8la">
+                          <node concept="3clFbS" id="3fi3fTlpKyJ" role="1bW5cS">
+                            <node concept="3clFbJ" id="3fi3fTlpKyK" role="3cqZAp">
+                              <node concept="2YIFZM" id="3fi3fTlpKyL" role="3clFbw">
+                                <ref role="37wK5l" to="pbu6:7LZDtvhyLWZ" resolve="isNodeCovered" />
+                                <ref role="1Pybhc" to="pbu6:7LZDtvhy76p" resolve="IDefaultCoverageAnalyzer" />
+                                <node concept="2OqwBi" id="3fi3fTlpKyM" role="37wK5m">
+                                  <node concept="37vLTw" id="3fi3fTlpKyN" role="2Oq$k0">
+                                    <ref role="3cqZAo" node="3fi3fTlpKyY" resolve="mapping" />
+                                  </node>
+                                  <node concept="3AV6Ez" id="3fi3fTlpKyO" role="2OqNvi" />
+                                </node>
+                              </node>
+                              <node concept="3clFbS" id="3fi3fTlpKyP" role="3clFbx">
+                                <node concept="3clFbF" id="3fi3fTlpKyQ" role="3cqZAp">
+                                  <node concept="2OqwBi" id="3fi3fTlpKyR" role="3clFbG">
+                                    <node concept="37vLTw" id="3fi3fTlpKyS" role="2Oq$k0">
+                                      <ref role="3cqZAo" node="3fi3fTlpKwR" resolve="coverage" />
+                                    </node>
+                                    <node concept="liA8E" id="3fi3fTlpKyT" role="2OqNvi">
+                                      <ref role="37wK5l" to="2ahs:RaqQlV4lZg" resolve="coverValue" />
+                                      <node concept="2OqwBi" id="3fi3fTlpKyU" role="37wK5m">
+                                        <node concept="37vLTw" id="3fi3fTlpKyV" role="2Oq$k0">
+                                          <ref role="3cqZAo" node="3fi3fTlpKyY" resolve="mapping" />
+                                        </node>
+                                        <node concept="3AY5_j" id="3fi3fTlpKyW" role="2OqNvi" />
+                                      </node>
+                                      <node concept="10Nm6u" id="3fi3fTlpKyX" role="37wK5m" />
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
+                            </node>
+                          </node>
+                          <node concept="gl6BB" id="3fi3fTlpKyY" role="1bW2Oz">
+                            <property role="TrG5h" value="mapping" />
+                            <node concept="2jxLKc" id="3fi3fTlpKyZ" role="1tU5fm" />
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="3cpWs8" id="3fi3fTlpKz0" role="3cqZAp">
+                    <node concept="3cpWsn" id="3fi3fTlpKz1" role="3cpWs9">
+                      <property role="TrG5h" value="originalNode" />
+                      <node concept="3Tqbb2" id="3fi3fTlpKz2" role="1tU5fm" />
+                      <node concept="2OqwBi" id="3fi3fTlpKz3" role="33vP2m">
+                        <node concept="2OqwBi" id="3fi3fTlpKz4" role="2Oq$k0">
+                          <node concept="37vLTw" id="3fi3fTlpKz5" role="2Oq$k0">
+                            <ref role="3cqZAo" node="3fi3fTlpKts" resolve="mapping" />
+                          </node>
+                          <node concept="3lbrtF" id="3fi3fTlpKz6" role="2OqNvi" />
+                        </node>
+                        <node concept="1z4cxt" id="3fi3fTlpKz7" role="2OqNvi">
+                          <node concept="1bVj0M" id="3fi3fTlpKz8" role="23t8la">
+                            <node concept="3clFbS" id="3fi3fTlpKz9" role="1bW5cS">
+                              <node concept="3clFbF" id="3fi3fTlpKza" role="3cqZAp">
+                                <node concept="3clFbC" id="3fi3fTlpKzb" role="3clFbG">
+                                  <node concept="37vLTw" id="3fi3fTlpKzc" role="3uHU7w">
+                                    <ref role="3cqZAo" node="3fi3fTlpKzs" resolve="descendant" />
+                                  </node>
+                                  <node concept="3EllGN" id="3fi3fTlpKzd" role="3uHU7B">
+                                    <node concept="37vLTw" id="3fi3fTlpKze" role="3ElVtu">
+                                      <ref role="3cqZAo" node="3fi3fTlpKzg" resolve="key" />
+                                    </node>
+                                    <node concept="37vLTw" id="3fi3fTlpKzf" role="3ElQJh">
+                                      <ref role="3cqZAo" node="3fi3fTlpKts" resolve="mapping" />
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
+                            </node>
+                            <node concept="gl6BB" id="3fi3fTlpKzg" role="1bW2Oz">
+                              <property role="TrG5h" value="key" />
+                              <node concept="2jxLKc" id="3fi3fTlpKzh" role="1tU5fm" />
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="3clFbJ" id="3fi3fTlpKzi" role="3cqZAp">
+                    <node concept="3clFbS" id="3fi3fTlpKzj" role="3clFbx">
+                      <node concept="3clFbF" id="3fi3fTlpKzk" role="3cqZAp">
+                        <node concept="2OqwBi" id="3fi3fTlpKzl" role="3clFbG">
+                          <node concept="37vLTw" id="3fi3fTlpKzm" role="2Oq$k0">
+                            <ref role="3cqZAo" node="3fi3fTlpKwR" resolve="coverage" />
+                          </node>
+                          <node concept="liA8E" id="3fi3fTlpKzn" role="2OqNvi">
+                            <ref role="37wK5l" to="2ahs:RaqQlV4lZg" resolve="coverValue" />
+                            <node concept="37vLTw" id="3fi3fTlpKzo" role="37wK5m">
+                              <ref role="3cqZAo" node="3fi3fTlpKz1" resolve="originalNode" />
+                            </node>
+                            <node concept="10Nm6u" id="3fi3fTlpKzp" role="37wK5m" />
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="2YIFZM" id="3fi3fTlpKzq" role="3clFbw">
+                      <ref role="37wK5l" to="pbu6:7LZDtvhyLWZ" resolve="isNodeCovered" />
+                      <ref role="1Pybhc" to="pbu6:7LZDtvhy76p" resolve="IDefaultCoverageAnalyzer" />
+                      <node concept="37vLTw" id="3fi3fTlpKzr" role="37wK5m">
+                        <ref role="3cqZAo" node="3fi3fTlpKzs" resolve="descendant" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+                <node concept="gl6BB" id="3fi3fTlpKzs" role="1bW2Oz">
+                  <property role="TrG5h" value="descendant" />
+                  <node concept="2jxLKc" id="3fi3fTlpKzt" role="1tU5fm" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3fi3fTlpKzu" role="3cqZAp">
+          <node concept="2OqwBi" id="3fi3fTlpKzv" role="3clFbG">
+            <node concept="37vLTw" id="3fi3fTlpKzw" role="2Oq$k0">
+              <ref role="3cqZAo" node="3fi3fTlpKy7" resolve="tt" />
+            </node>
+            <node concept="liA8E" id="3fi3fTlpKzx" role="2OqNvi">
+              <ref role="37wK5l" to="2ahs:7obiejAu3TD" resolve="setValue" />
+              <node concept="37vLTw" id="3fi3fTlpKzy" role="37wK5m">
+                <ref role="3cqZAo" node="5s__jxCsPC7" resolve="res" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3fi3fTlpKzz" role="3cqZAp">
+          <node concept="2OqwBi" id="3fi3fTlpKz$" role="3clFbG">
+            <node concept="37vLTw" id="3fi3fTlpKz_" role="2Oq$k0">
+              <ref role="3cqZAo" node="3fi3fTlpKwP" resolve="context" />
+            </node>
+            <node concept="liA8E" id="3fi3fTlpKzA" role="2OqNvi">
+              <ref role="37wK5l" to="2ahs:2pAf7L4EmGp" resolve="popEnvironment" />
+              <node concept="37vLTw" id="3fi3fTlpKzB" role="37wK5m">
+                <ref role="3cqZAo" node="3fi3fTlpKto" resolve="lambda" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs6" id="3fi3fTlpKzC" role="3cqZAp">
+          <node concept="37vLTw" id="3fi3fTlpKzD" role="3cqZAk">
+            <ref role="3cqZAo" node="5s__jxCsPC7" resolve="res" />
+          </node>
+        </node>
+      </node>
+      <node concept="2AHcQZ" id="3fi3fTmWYbt" role="2AJF6D">
+        <ref role="2AI5Lk" to="wyt6:~Override" />
+      </node>
+    </node>
+    <node concept="2tJIrI" id="5s__jxCoR7u" role="jymVt" />
+    <node concept="3Tm1VV" id="5s__jxCoQMw" role="1B3o_S" />
+    <node concept="3uibUv" id="5s__jxCp4EB" role="1zkMxy">
+      <ref role="3uigEE" node="$yb$20kU6$" resolve="ExecutableValue" />
+    </node>
+  </node>
 </model>
 
diff --git a/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.lambda.interpreter/models/plugin.mps b/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.lambda.interpreter/models/plugin.mps
index d2b65adf05..9bc5418e8d 100644
--- a/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.lambda.interpreter/models/plugin.mps
+++ b/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.lambda.interpreter/models/plugin.mps
@@ -1341,28 +1341,11 @@
       <node concept="3dA_Gj" id="$o50RKwSys" role="3vQZUl">
         <node concept="9aQIb" id="$o50RKwSyu" role="3vcmbn">
           <node concept="3clFbS" id="$o50RKwSyw" role="9aQI4">
-            <node concept="3cpWs8" id="$o50RKyA3A" role="3cqZAp">
-              <node concept="3cpWsn" id="$o50RKyA3D" role="3cpWs9">
-                <property role="TrG5h" value="explicitLambda" />
-                <node concept="3Tqbb2" id="$o50RKyA3$" role="1tU5fm">
-                  <ref role="ehGHo" to="zzzn:6zmBjqUkws6" resolve="LambdaExpression" />
-                </node>
-                <node concept="2OqwBi" id="$yb$20fEyA" role="33vP2m">
-                  <node concept="oxGPV" id="$yb$20fEwv" role="2Oq$k0" />
-                  <node concept="2qgKlT" id="$yb$20fEBz" role="2OqNvi">
-                    <ref role="37wK5l" to="5s8v:$yb$20fCkw" resolve="makeExplicitLambda" />
-                    <node concept="oxNuS" id="6ovbtsiW1rd" role="37wK5m" />
-                  </node>
-                </node>
-              </node>
-            </node>
             <node concept="3cpWs6" id="$o50RKwSIW" role="3cqZAp">
               <node concept="2ShNRf" id="$yb$20fEoZ" role="3cqZAk">
                 <node concept="1pGfFk" id="$yb$20fEwf" role="2ShVmc">
-                  <ref role="37wK5l" to="sxpq:$yb$20fE3_" resolve="LambdaValue" />
-                  <node concept="37vLTw" id="$o50RKyACe" role="37wK5m">
-                    <ref role="3cqZAo" node="$o50RKyA3D" resolve="explicitLambda" />
-                  </node>
+                  <ref role="37wK5l" to="sxpq:3fi3fTlpKtB" resolve="ShortLambdaValue" />
+                  <node concept="oxGPV" id="5s__jxCsmeE" role="37wK5m" />
                   <node concept="oxNuS" id="22hm_0zJz3I" role="37wK5m" />
                   <node concept="3fckFw" id="4_qY3E6GDzf" role="37wK5m" />
                   <node concept="3clFbT" id="5ya_dKpuVVq" role="37wK5m">
@@ -1660,15 +1643,15 @@
     <node concept="qq9P1" id="$yb$20hN8F" role="qq9xR">
       <property role="2TnfIJ" value="true" />
       <ref role="qq9wM" to="zzzn:6zmBjqUkHal" resolve="LambdaArgRef" />
-      <node concept="3vetai" id="64rKhdUOBCf" role="3vQZUl">
-        <node concept="3EllGN" id="6ovbtsiX_CS" role="3vdyny">
-          <node concept="2OqwBi" id="6ovbtsiX_CT" role="3ElVtu">
-            <node concept="oxGPV" id="6ovbtsiX_CU" role="2Oq$k0" />
-            <node concept="3TrEf2" id="6ovbtsiX_CV" role="2OqNvi">
+      <node concept="3vetai" id="5s__jxCNwxE" role="3vQZUl">
+        <node concept="3EllGN" id="5s__jxC$bSj" role="3vdyny">
+          <node concept="2OqwBi" id="5s__jxC$bSk" role="3ElVtu">
+            <node concept="oxGPV" id="5s__jxC$bSl" role="2Oq$k0" />
+            <node concept="3TrEf2" id="5s__jxC$bSm" role="2OqNvi">
               <ref role="3Tt5mk" to="zzzn:6zmBjqUkHam" resolve="arg" />
             </node>
           </node>
-          <node concept="TvHiN" id="6ovbtsiX_CW" role="3ElQJh" />
+          <node concept="TvHiN" id="5s__jxC$bSn" role="3ElQJh" />
         </node>
       </node>
     </node>
diff --git a/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.tracing.plugin/models/org.iets3.core.expr.tracing.plugin.plugin.mps b/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.tracing.plugin/models/org.iets3.core.expr.tracing.plugin.plugin.mps
index 3e61aa0d49..c7f582218f 100644
--- a/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.tracing.plugin/models/org.iets3.core.expr.tracing.plugin.plugin.mps
+++ b/code/languages/org.iets3.opensource/solutions/org.iets3.core.expr.tracing.plugin/models/org.iets3.core.expr.tracing.plugin.plugin.mps
@@ -133,7 +133,7 @@
       <concept id="1562714432501166197" name="jetbrains.mps.lang.plugin.structure.KeymapChangesDeclaration" flags="ng" index="Zd50a">
         <child id="1562714432501166199" name="shortcutChange" index="Zd508" />
       </concept>
-      <concept id="6193305307616715384" name="jetbrains.mps.lang.plugin.structure.ShortcutChange" flags="ng" index="1bYyw_">
+      <concept id="6193305307616715384" name="jetbrains.mps.lang.plugin.structure.ShortcutChange" flags="ngI" index="1bYyw_">
         <reference id="6193305307616734326" name="action" index="1bYAoF" />
       </concept>
       <concept id="1206092561075" name="jetbrains.mps.lang.plugin.structure.ActionParameterReferenceOperation" flags="nn" index="3gHZIF" />
@@ -144,7 +144,7 @@
       </concept>
       <concept id="1217252428768" name="jetbrains.mps.lang.plugin.structure.ActionDataParameterReferenceOperation" flags="nn" index="1DTwFV" />
       <concept id="1204478074808" name="jetbrains.mps.lang.plugin.structure.ConceptFunctionParameter_MPSProject" flags="nn" index="1KvdUw" />
-      <concept id="1217413147516" name="jetbrains.mps.lang.plugin.structure.ActionParameter" flags="ng" index="1NuADB">
+      <concept id="1217413147516" name="jetbrains.mps.lang.plugin.structure.ActionParameter" flags="ngI" index="1NuADB">
         <child id="5538333046911298738" name="condition" index="1oa70y" />
       </concept>
     </language>
@@ -182,7 +182,7 @@
       <concept id="1188207840427" name="jetbrains.mps.baseLanguage.structure.AnnotationInstance" flags="nn" index="2AHcQZ">
         <reference id="1188208074048" name="annotation" index="2AI5Lk" />
       </concept>
-      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ng" index="2AJDlI">
+      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ngI" index="2AJDlI">
         <child id="1188208488637" name="annotation" index="2AJF6D" />
       </concept>
       <concept id="2820489544401957797" name="jetbrains.mps.baseLanguage.structure.DefaultClassCreator" flags="nn" index="HV5vD">
@@ -247,7 +247,7 @@
         <property id="1176718929932" name="isFinal" index="3TUv4t" />
         <child id="1068431790190" name="initializer" index="33vP2m" />
       </concept>
-      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ngI" index="366HgL">
         <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
       </concept>
       <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
@@ -314,7 +314,7 @@
         <child id="1154542793668" name="componentType" index="3g7fb8" />
         <child id="1154542803372" name="initValue" index="3g7hyw" />
       </concept>
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
@@ -341,7 +341,7 @@
         <child id="8276990574895933172" name="throwable" index="1zc67B" />
       </concept>
       <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
-      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ngI" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
       <concept id="1144226303539" name="jetbrains.mps.baseLanguage.structure.ForeachStatement" flags="nn" index="1DcWWT">
@@ -435,7 +435,7 @@
     </language>
     <language id="443f4c36-fcf5-4eb6-9500-8d06ed259e3e" name="jetbrains.mps.baseLanguage.classifiers">
       <concept id="1205752633985" name="jetbrains.mps.baseLanguage.classifiers.structure.ThisClassifierExpression" flags="nn" index="2WthIp" />
-      <concept id="1205756064662" name="jetbrains.mps.baseLanguage.classifiers.structure.IMemberOperation" flags="ng" index="2WEnae">
+      <concept id="1205756064662" name="jetbrains.mps.baseLanguage.classifiers.structure.IMemberOperation" flags="ngI" index="2WEnae">
         <reference id="1205756909548" name="member" index="2WH_rO" />
       </concept>
       <concept id="1205769149993" name="jetbrains.mps.baseLanguage.classifiers.structure.DefaultClassifierMethodCallOperation" flags="nn" index="2XshWL">
@@ -469,6 +469,7 @@
       <concept id="1139621453865" name="jetbrains.mps.lang.smodel.structure.Node_IsInstanceOfOperation" flags="nn" index="1mIQ4w">
         <child id="1177027386292" name="conceptArgument" index="cj9EA" />
       </concept>
+      <concept id="1171999116870" name="jetbrains.mps.lang.smodel.structure.Node_IsNullOperation" flags="nn" index="3w_OXm" />
       <concept id="1144100932627" name="jetbrains.mps.lang.smodel.structure.OperationParm_Inclusion" flags="ng" index="1xIGOp" />
       <concept id="1144101972840" name="jetbrains.mps.lang.smodel.structure.OperationParm_Concept" flags="ng" index="1xMEDy">
         <child id="1207343664468" name="conceptArgument" index="ri$Ld" />
@@ -490,7 +491,7 @@
         <property id="1193676396447" name="virtualPackage" index="3GE5qa" />
         <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
       </concept>
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
       <concept id="4222318806802425298" name="jetbrains.mps.lang.core.structure.SuppressErrorsAnnotation" flags="ng" index="15s5l7">
@@ -3572,56 +3573,72 @@
       <node concept="3clFbS" id="kZqQ80bew$" role="3clF47">
         <node concept="3clFbJ" id="kZqQ80bew_" role="3cqZAp">
           <node concept="3clFbS" id="kZqQ80bewA" role="3clFbx">
-            <node concept="1QHqEK" id="4_BA2XOJyem" role="3cqZAp">
-              <node concept="1QHqEC" id="4_BA2XOJyeo" role="1QHqEI">
-                <node concept="3clFbS" id="4_BA2XOJyeq" role="1bW5cS">
-                  <node concept="3clFbF" id="kZqQ80bewB" role="3cqZAp">
-                    <node concept="2OqwBi" id="kZqQ80bewC" role="3clFbG">
-                      <node concept="2YIFZM" id="kZqQ80bewD" role="2Oq$k0">
-                        <ref role="1Pybhc" to="bd8o:~ApplicationManager" resolve="ApplicationManager" />
-                        <ref role="37wK5l" to="bd8o:~ApplicationManager.getApplication()" resolve="getApplication" />
-                      </node>
-                      <node concept="liA8E" id="kZqQ80bewE" role="2OqNvi">
-                        <ref role="37wK5l" to="bd8o:~Application.invokeLater(java.lang.Runnable)" resolve="invokeLater" />
-                        <node concept="1bVj0M" id="kZqQ80bewF" role="37wK5m">
-                          <node concept="3clFbS" id="kZqQ80bewG" role="1bW5cS">
-                            <node concept="3clFbF" id="kZqQ80bewH" role="3cqZAp">
-                              <node concept="2YIFZM" id="kZqQ80bewI" role="3clFbG">
-                                <ref role="1Pybhc" to="jkm4:~Messages" resolve="Messages" />
-                                <ref role="37wK5l" to="jkm4:~Messages.showErrorDialog(java.lang.String,java.lang.String)" resolve="showErrorDialog" />
-                                <node concept="3cpWs3" id="kZqQ80bewJ" role="37wK5m">
-                                  <node concept="2OqwBi" id="kZqQ80bewK" role="3uHU7w">
-                                    <node concept="2qgKlT" id="kZqQ80bewN" role="2OqNvi">
-                                      <ref role="37wK5l" to="tpcu:hEwIMiw" resolve="getPresentation" />
-                                    </node>
-                                    <node concept="37vLTw" id="kZqQ80cV$z" role="2Oq$k0">
-                                      <ref role="3cqZAo" node="3ApArNFASW2" resolve="node" />
-                                    </node>
+            <node concept="3clFbF" id="kZqQ80bewB" role="3cqZAp">
+              <node concept="2OqwBi" id="kZqQ80bewC" role="3clFbG">
+                <node concept="2YIFZM" id="kZqQ80bewD" role="2Oq$k0">
+                  <ref role="1Pybhc" to="bd8o:~ApplicationManager" resolve="ApplicationManager" />
+                  <ref role="37wK5l" to="bd8o:~ApplicationManager.getApplication()" resolve="getApplication" />
+                </node>
+                <node concept="liA8E" id="kZqQ80bewE" role="2OqNvi">
+                  <ref role="37wK5l" to="bd8o:~Application.invokeLater(java.lang.Runnable)" resolve="invokeLater" />
+                  <node concept="1bVj0M" id="kZqQ80bewF" role="37wK5m">
+                    <node concept="3clFbS" id="kZqQ80bewG" role="1bW5cS">
+                      <node concept="3cpWs8" id="XbOhLk0uis" role="3cqZAp">
+                        <node concept="3cpWsn" id="XbOhLk0uiv" role="3cpWs9">
+                          <property role="TrG5h" value="presentation" />
+                          <node concept="17QB3L" id="XbOhLk0uiq" role="1tU5fm" />
+                        </node>
+                      </node>
+                      <node concept="1QHqEK" id="4_BA2XOJyem" role="3cqZAp">
+                        <node concept="1QHqEC" id="4_BA2XOJyeo" role="1QHqEI">
+                          <node concept="3clFbS" id="4_BA2XOJyeq" role="1bW5cS">
+                            <node concept="3clFbF" id="XbOhLk0CTr" role="3cqZAp">
+                              <node concept="37vLTI" id="XbOhLk0FRL" role="3clFbG">
+                                <node concept="2OqwBi" id="XbOhLk0K0x" role="37vLTx">
+                                  <node concept="37vLTw" id="XbOhLk0If7" role="2Oq$k0">
+                                    <ref role="3cqZAo" node="3ApArNFASW2" resolve="node" />
                                   </node>
-                                  <node concept="Xl_RD" id="kZqQ80bewO" role="3uHU7B">
-                                    <property role="Xl_RC" value="The trace was null for node \n" />
+                                  <node concept="2qgKlT" id="XbOhLk0P14" role="2OqNvi">
+                                    <ref role="37wK5l" to="tpcu:hEwIMiw" resolve="getPresentation" />
                                   </node>
                                 </node>
-                                <node concept="Xl_RD" id="kZqQ80bewP" role="37wK5m">
-                                  <property role="Xl_RC" value="Tracing" />
+                                <node concept="37vLTw" id="XbOhLk0CTq" role="37vLTJ">
+                                  <ref role="3cqZAo" node="XbOhLk0uiv" resolve="presentation" />
                                 </node>
                               </node>
                             </node>
                           </node>
                         </node>
+                        <node concept="2OqwBi" id="4_BA2XOJD6d" role="ukAjM">
+                          <node concept="37vLTw" id="4_BA2XOJ_SZ" role="2Oq$k0">
+                            <ref role="3cqZAo" to="jpm3:3ApArNFASVZ" resolve="mpsProject" />
+                          </node>
+                          <node concept="liA8E" id="4_BA2XOJGmz" role="2OqNvi">
+                            <ref role="37wK5l" to="z1c3:~Project.getRepository()" resolve="getRepository" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="3clFbF" id="kZqQ80bewH" role="3cqZAp">
+                        <node concept="2YIFZM" id="kZqQ80bewI" role="3clFbG">
+                          <ref role="1Pybhc" to="jkm4:~Messages" resolve="Messages" />
+                          <ref role="37wK5l" to="jkm4:~Messages.showErrorDialog(java.lang.String,java.lang.String)" resolve="showErrorDialog" />
+                          <node concept="3cpWs3" id="kZqQ80bewJ" role="37wK5m">
+                            <node concept="37vLTw" id="XbOhLk0Syx" role="3uHU7w">
+                              <ref role="3cqZAo" node="XbOhLk0uiv" resolve="presentation" />
+                            </node>
+                            <node concept="Xl_RD" id="kZqQ80bewO" role="3uHU7B">
+                              <property role="Xl_RC" value="The trace was null for node \n" />
+                            </node>
+                          </node>
+                          <node concept="Xl_RD" id="kZqQ80bewP" role="37wK5m">
+                            <property role="Xl_RC" value="Tracing" />
+                          </node>
+                        </node>
                       </node>
                     </node>
                   </node>
                 </node>
               </node>
-              <node concept="2OqwBi" id="4_BA2XOJD6d" role="ukAjM">
-                <node concept="37vLTw" id="4_BA2XOJ_SZ" role="2Oq$k0">
-                  <ref role="3cqZAo" to="jpm3:3ApArNFASVZ" resolve="mpsProject" />
-                </node>
-                <node concept="liA8E" id="4_BA2XOJGmz" role="2OqNvi">
-                  <ref role="37wK5l" to="z1c3:~Project.getRepository()" resolve="getRepository" />
-                </node>
-              </node>
             </node>
             <node concept="3cpWs6" id="kZqQ80bewQ" role="3cqZAp" />
           </node>
@@ -7737,6 +7754,27 @@
             </node>
           </node>
         </node>
+        <node concept="3cpWs8" id="5s__jxDMzPQ" role="3cqZAp">
+          <node concept="3cpWsn" id="5s__jxDMzPR" role="3cpWs9">
+            <property role="TrG5h" value="shortLambdaNode" />
+            <node concept="3Tqbb2" id="5s__jxDMzPS" role="1tU5fm">
+              <ref role="ehGHo" to="zzzn:6zmBjqUm7MQ" resolve="ShortLambdaExpression" />
+            </node>
+            <node concept="2OqwBi" id="5s__jxDMzPT" role="33vP2m">
+              <node concept="37vLTw" id="5s__jxDMzPU" role="2Oq$k0">
+                <ref role="3cqZAo" node="2a_JeWFLmG1" resolve="node" />
+              </node>
+              <node concept="2Xjw5R" id="5s__jxDMzPV" role="2OqNvi">
+                <node concept="1xMEDy" id="5s__jxDMzPW" role="1xVPHs">
+                  <node concept="chp4Y" id="5s__jxDMzPX" role="ri$Ld">
+                    <ref role="cht4Q" to="zzzn:6zmBjqUm7MQ" resolve="ShortLambdaExpression" />
+                  </node>
+                </node>
+                <node concept="1xIGOp" id="5s__jxDMzPY" role="1xVPHs" />
+              </node>
+            </node>
+          </node>
+        </node>
         <node concept="3clFbJ" id="2a_JeWFLqKw" role="3cqZAp">
           <node concept="3clFbS" id="2a_JeWFLqKy" role="3clFbx">
             <node concept="3cpWs6" id="2a_JeWFLvKl" role="3cqZAp">
@@ -7745,10 +7783,18 @@
               </node>
             </node>
           </node>
-          <node concept="3clFbC" id="2a_JeWFLt3g" role="3clFbw">
-            <node concept="10Nm6u" id="2a_JeWFLu5p" role="3uHU7w" />
-            <node concept="37vLTw" id="2a_JeWFLsiP" role="3uHU7B">
-              <ref role="3cqZAo" node="2a_JeWFLo38" resolve="lambdaNode" />
+          <node concept="1Wc70l" id="5s__jxDMPva" role="3clFbw">
+            <node concept="3clFbC" id="5s__jxDMR2D" role="3uHU7w">
+              <node concept="10Nm6u" id="5s__jxDMS7K" role="3uHU7w" />
+              <node concept="37vLTw" id="5s__jxDMQmH" role="3uHU7B">
+                <ref role="3cqZAo" node="5s__jxDMzPR" resolve="shortLambdaNode" />
+              </node>
+            </node>
+            <node concept="3clFbC" id="2a_JeWFLt3g" role="3uHU7B">
+              <node concept="37vLTw" id="2a_JeWFLsiP" role="3uHU7B">
+                <ref role="3cqZAo" node="2a_JeWFLo38" resolve="lambdaNode" />
+              </node>
+              <node concept="10Nm6u" id="2a_JeWFLu5p" role="3uHU7w" />
             </node>
           </node>
         </node>
@@ -7768,12 +7814,28 @@
               <node concept="3Tqbb2" id="2a_JeWFMP6s" role="3rvQeY" />
               <node concept="3Tqbb2" id="2a_JeWFMP6t" role="3rvSg0" />
             </node>
-            <node concept="2OqwBi" id="2a_JeWFMP6u" role="33vP2m">
-              <node concept="37vLTw" id="2a_JeWFMP6v" role="2Oq$k0">
-                <ref role="3cqZAo" node="2a_JeWFLo38" resolve="lambdaNode" />
+            <node concept="3K4zz7" id="5s__jxDMTdS" role="33vP2m">
+              <node concept="2OqwBi" id="5s__jxDMV4H" role="3K4Cdx">
+                <node concept="37vLTw" id="5s__jxDMUr3" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2a_JeWFLo38" resolve="lambdaNode" />
+                </node>
+                <node concept="3w_OXm" id="5s__jxDMWAw" role="2OqNvi" />
               </node>
-              <node concept="2qgKlT" id="2a_JeWFMP6w" role="2OqNvi">
-                <ref role="37wK5l" to="5s8v:3u8VfJfplfS" resolve="getNodeMapping" />
+              <node concept="2OqwBi" id="5s__jxDMYFl" role="3K4E3e">
+                <node concept="37vLTw" id="5s__jxDMXQN" role="2Oq$k0">
+                  <ref role="3cqZAo" node="5s__jxDMzPR" resolve="shortLambdaNode" />
+                </node>
+                <node concept="2qgKlT" id="5s__jxDN01V" role="2OqNvi">
+                  <ref role="37wK5l" to="5s8v:5s__jxDLZVE" resolve="getNodeMapping" />
+                </node>
+              </node>
+              <node concept="2OqwBi" id="5s__jxDNpUy" role="3K4GZi">
+                <node concept="37vLTw" id="5s__jxDN1iI" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2a_JeWFLo38" resolve="lambdaNode" />
+                </node>
+                <node concept="2qgKlT" id="5s__jxDNrhO" role="2OqNvi">
+                  <ref role="37wK5l" to="5s8v:3u8VfJfplfS" resolve="getNodeMapping" />
+                </node>
               </node>
             </node>
           </node>
diff --git a/code/languages/org.iets3.opensource/solutions/org.iets3.opensource.build/models/org/iets3/opensource/build/build.mps b/code/languages/org.iets3.opensource/solutions/org.iets3.opensource.build/models/org/iets3/opensource/build/build.mps
index 8b80dbc1bc..eb31cce141 100644
--- a/code/languages/org.iets3.opensource/solutions/org.iets3.opensource.build/models/org/iets3/opensource/build/build.mps
+++ b/code/languages/org.iets3.opensource/solutions/org.iets3.opensource.build/models/org/iets3/opensource/build/build.mps
@@ -103,7 +103,7 @@
       <concept id="8654221991637384182" name="jetbrains.mps.build.structure.BuildFileIncludesSelector" flags="ng" index="3qWCbU">
         <property id="8654221991637384184" name="pattern" index="3qWCbO" />
       </concept>
-      <concept id="4701820937132344003" name="jetbrains.mps.build.structure.BuildLayout_Container" flags="ng" index="1y1bJS">
+      <concept id="4701820937132344003" name="jetbrains.mps.build.structure.BuildLayout_Container" flags="ngI" index="1y1bJS">
         <child id="7389400916848037006" name="children" index="39821P" />
       </concept>
       <concept id="5610619299013057363" name="jetbrains.mps.build.structure.BuildLayout_ImportContent" flags="ng" index="3ygNvl">
@@ -133,7 +133,7 @@
       <concept id="4173297143638832582" name="jetbrains.mps.build.mps.runner.structure.BuildSolutionRunnerPlugin" flags="ng" index="_l39y" />
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
@@ -3628,6 +3628,11 @@
             <ref role="3bR37D" node="3qKzW8QxJyw" resolve="org.iets3.core.expr.base.shared.runtime" />
           </node>
         </node>
+        <node concept="1SiIV0" id="4X7jg4xF$FY" role="3bR37C">
+          <node concept="3bR9La" id="4X7jg4xF$FZ" role="1SiIV1">
+            <ref role="3bR37D" node="49WTic8jAD5" resolve="org.iets3.core.expr.lambda" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtD" id="6JPXQMQs0pX" role="2G$12L">
         <property role="BnDLt" value="true" />
diff --git a/code/languages/org.iets3.opensource/tests/test.in.expr.os/models/test.in.expr.os.lambda@tests.mps b/code/languages/org.iets3.opensource/tests/test.in.expr.os/models/test.in.expr.os.lambda@tests.mps
index 9e603a44b7..63b41e6589 100644
--- a/code/languages/org.iets3.opensource/tests/test.in.expr.os/models/test.in.expr.os.lambda@tests.mps
+++ b/code/languages/org.iets3.opensource/tests/test.in.expr.os/models/test.in.expr.os.lambda@tests.mps
@@ -10,8 +10,14 @@
   <imports />
   <registry>
     <language id="2f7e2e35-6e74-4c43-9fa5-2465d68f5996" name="org.iets3.core.expr.collections">
+      <concept id="5849458724932670346" name="org.iets3.core.expr.collections.structure.BracketOp" flags="ng" index="2yLE0X">
+        <child id="5849458724932670347" name="index" index="2yLE0W" />
+      </concept>
       <concept id="5585772046594451299" name="org.iets3.core.expr.collections.structure.SumOp" flags="ng" index="2$5g5R" />
+      <concept id="8872269265513219132" name="org.iets3.core.expr.collections.structure.AsImmutableListOp" flags="ng" index="2TEanv" />
+      <concept id="3989687177013570767" name="org.iets3.core.expr.collections.structure.UpToTarget" flags="ng" index="1hzhIm" />
       <concept id="7554398283340640412" name="org.iets3.core.expr.collections.structure.MapOp" flags="ng" index="3iw6QE" />
+      <concept id="7554398283340715406" name="org.iets3.core.expr.collections.structure.WhereOp" flags="ng" index="3izCyS" />
       <concept id="7554398283339850572" name="org.iets3.core.expr.collections.structure.FirstOp" flags="ng" index="3iB7TU" />
       <concept id="7554398283339796915" name="org.iets3.core.expr.collections.structure.SizeOp" flags="ng" index="3iB8M5" />
       <concept id="7554398283339749509" name="org.iets3.core.expr.collections.structure.CollectionType" flags="ng" index="3iBWmN">
@@ -23,7 +29,7 @@
       <concept id="7554398283339757344" name="org.iets3.core.expr.collections.structure.ListType" flags="ng" index="3iBYCm" />
     </language>
     <language id="7b68d745-a7b8-48b9-bd9c-05c0f8725a35" name="org.iets3.core.base">
-      <concept id="229512757698888199" name="org.iets3.core.base.structure.IOptionallyNamed" flags="ng" index="pfQq$">
+      <concept id="229512757698888199" name="org.iets3.core.base.structure.IOptionallyNamed" flags="ngI" index="pfQq$">
         <child id="229512757698888936" name="optionalName" index="pfQ1b" />
       </concept>
       <concept id="229512757698888202" name="org.iets3.core.base.structure.OptionalNameSpecifier" flags="ng" index="pfQqD">
@@ -38,25 +44,26 @@
       <concept id="7971844778466793028" name="org.iets3.core.expr.base.structure.AlternativesExpression" flags="ng" index="2fGnzi">
         <child id="7971844778466793162" name="alternatives" index="2fGnxs" />
       </concept>
-      <concept id="4261931054731905240" name="org.iets3.core.expr.base.structure.IContainExpressionParam" flags="ng" index="2lDidI">
+      <concept id="4261931054731905240" name="org.iets3.core.expr.base.structure.IContainExpressionParam" flags="ngI" index="2lDidI">
         <child id="4261931054731905241" name="expr" index="2lDidJ" />
       </concept>
-      <concept id="7089558164905593724" name="org.iets3.core.expr.base.structure.IOptionallyTyped" flags="ng" index="2zM23E">
+      <concept id="7089558164905593724" name="org.iets3.core.expr.base.structure.IOptionallyTyped" flags="ngI" index="2zM23E">
         <child id="7089558164905593725" name="type" index="2zM23F" />
       </concept>
-      <concept id="7071042522334260296" name="org.iets3.core.expr.base.structure.ITyped" flags="ng" index="2_iKZX">
+      <concept id="7071042522334260296" name="org.iets3.core.expr.base.structure.ITyped" flags="ngI" index="2_iKZX">
         <child id="8811147530085329321" name="type" index="2S399n" />
       </concept>
       <concept id="867786408877811041" name="org.iets3.core.expr.base.structure.Contract" flags="ng" index="I61D5">
         <child id="867786408877811045" name="items" index="I61D1" />
       </concept>
       <concept id="867786408877811180" name="org.iets3.core.expr.base.structure.Postcondition" flags="ng" index="I61F8" />
-      <concept id="867786408877810851" name="org.iets3.core.expr.base.structure.IContracted" flags="ng" index="I61I7">
+      <concept id="867786408877810851" name="org.iets3.core.expr.base.structure.IContracted" flags="ngI" index="I61I7">
         <child id="867786408877811042" name="contract" index="I61D6" />
       </concept>
       <concept id="5115872837157187871" name="org.iets3.core.expr.base.structure.ParensExpression" flags="ng" index="30bsCy" />
       <concept id="5115872837156761033" name="org.iets3.core.expr.base.structure.EqualsExpression" flags="ng" index="30cPrO" />
       <concept id="5115872837156687764" name="org.iets3.core.expr.base.structure.GreaterExpression" flags="ng" index="30d7iD" />
+      <concept id="5115872837156724025" name="org.iets3.core.expr.base.structure.LogicalAndExpression" flags="ng" index="30deo4" />
       <concept id="5115872837156652453" name="org.iets3.core.expr.base.structure.MinusExpression" flags="ng" index="30dvUo" />
       <concept id="5115872837156578671" name="org.iets3.core.expr.base.structure.MulExpression" flags="ng" index="30dDTi" />
       <concept id="5115872837156578546" name="org.iets3.core.expr.base.structure.PlusExpression" flags="ng" index="30dDZf" />
@@ -68,6 +75,14 @@
         <child id="9002563722476995147" name="target" index="1QScD9" />
       </concept>
     </language>
+    <language id="92d2ea16-5a42-4fdf-a676-c7604efe3504" name="de.slisson.mps.richtext">
+      <concept id="2557074442922380897" name="de.slisson.mps.richtext.structure.Text" flags="ng" index="19SGf9">
+        <child id="2557074442922392302" name="words" index="19SJt6" />
+      </concept>
+      <concept id="2557074442922438156" name="de.slisson.mps.richtext.structure.Word" flags="ng" index="19SUe$">
+        <property id="2557074442922438158" name="escapedValue" index="19SUeA" />
+      </concept>
+    </language>
     <language id="d441fba0-f46b-43cd-b723-dad7b65da615" name="org.iets3.core.expr.tests">
       <concept id="543569365052056273" name="org.iets3.core.expr.tests.structure.EqualsTestOp" flags="ng" index="_fku$" />
       <concept id="543569365052056263" name="org.iets3.core.expr.tests.structure.TestCase" flags="ng" index="_fkuM">
@@ -85,6 +100,7 @@
       <concept id="5285810042889815162" name="org.iets3.core.expr.tests.structure.EmptyTestItem" flags="ng" index="3dYjL0" />
     </language>
     <language id="6b277d9a-d52d-416f-a209-1919bd737f50" name="org.iets3.core.expr.simpleTypes">
+      <concept id="7971844778467001950" name="org.iets3.core.expr.simpleTypes.structure.OtherwiseLiteral" flags="ng" index="2fHqz8" />
       <concept id="8219602584782245544" name="org.iets3.core.expr.simpleTypes.structure.NumberType" flags="ng" index="mLuIC" />
       <concept id="5115872837157054169" name="org.iets3.core.expr.simpleTypes.structure.IntegerType" flags="ng" index="30bXR$" />
       <concept id="5115872837157054170" name="org.iets3.core.expr.simpleTypes.structure.NumberLiteral" flags="ng" index="30bXRB">
@@ -100,7 +116,7 @@
       <concept id="8811147530085329320" name="org.iets3.core.expr.toplevel.structure.RecordLiteral" flags="ng" index="2S399m">
         <child id="8811147530085329323" name="memberValues" index="2S399l" />
       </concept>
-      <concept id="602952467877559919" name="org.iets3.core.expr.toplevel.structure.IRecordDeclaration" flags="ng" index="S5Q1W">
+      <concept id="602952467877559919" name="org.iets3.core.expr.toplevel.structure.IRecordDeclaration" flags="ngI" index="S5Q1W">
         <child id="602952467877562565" name="members" index="S5Trm" />
       </concept>
       <concept id="8811147530084018370" name="org.iets3.core.expr.toplevel.structure.RecordType" flags="ng" index="2Ss9cW">
@@ -112,8 +128,19 @@
       <concept id="4790956042240570348" name="org.iets3.core.expr.toplevel.structure.FunctionCall" flags="ng" index="1af_rf" />
       <concept id="4790956042240148643" name="org.iets3.core.expr.toplevel.structure.Function" flags="ng" index="1aga60" />
     </language>
+    <language id="d4280a54-f6df-4383-aa41-d1b2bffa7eb1" name="com.mbeddr.core.base">
+      <concept id="8375407818529178006" name="com.mbeddr.core.base.structure.TextBlock" flags="ng" index="OjmMv">
+        <child id="8375407818529178007" name="text" index="OjmMu" />
+      </concept>
+      <concept id="3857533489766146428" name="com.mbeddr.core.base.structure.ElementDocumentation" flags="ng" index="1z9TsT">
+        <child id="4052432714772608243" name="text" index="1w35rA" />
+      </concept>
+    </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
+        <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
+      </concept>
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
@@ -134,17 +161,17 @@
         <reference id="4790956042241106533" name="val" index="1adwt6" />
       </concept>
       <concept id="4790956042241053102" name="org.iets3.core.expr.lambda.structure.ValExpression" flags="ng" index="1adJid" />
-      <concept id="4790956042240745578" name="org.iets3.core.expr.lambda.structure.IFunctionRef" flags="ng" index="1aeol9">
+      <concept id="4790956042240745578" name="org.iets3.core.expr.lambda.structure.IFunctionRef" flags="ngI" index="1aeol9">
         <reference id="4790956042240745579" name="fun" index="1aeol8" />
       </concept>
       <concept id="4790956042240407469" name="org.iets3.core.expr.lambda.structure.ArgRef" flags="ng" index="1afdae">
         <reference id="4790956042240460422" name="arg" index="1afue_" />
       </concept>
-      <concept id="4790956042240522396" name="org.iets3.core.expr.lambda.structure.IFunctionCall" flags="ng" index="1afhQZ">
+      <concept id="4790956042240522396" name="org.iets3.core.expr.lambda.structure.IFunctionCall" flags="ngI" index="1afhQZ">
         <reference id="4790956042240522408" name="function" index="1afhQb" />
         <child id="4790956042240522406" name="args" index="1afhQ5" />
       </concept>
-      <concept id="4790956042240100911" name="org.iets3.core.expr.lambda.structure.IFunctionLike" flags="ng" index="1ahQWc">
+      <concept id="4790956042240100911" name="org.iets3.core.expr.lambda.structure.IFunctionLike" flags="ngI" index="1ahQWc">
         <child id="4790956042240100927" name="args" index="1ahQWs" />
         <child id="4790956042240100950" name="body" index="1ahQXP" />
       </concept>
@@ -160,7 +187,7 @@
         <child id="7554398283340318471" name="args" index="3ix9CL" />
       </concept>
       <concept id="7554398283340318478" name="org.iets3.core.expr.lambda.structure.LambdaArg" flags="ng" index="3ix9CS" />
-      <concept id="7554398283340318473" name="org.iets3.core.expr.lambda.structure.IArgument" flags="ng" index="3ix9CZ">
+      <concept id="7554398283340318473" name="org.iets3.core.expr.lambda.structure.IArgument" flags="ngI" index="3ix9CZ">
         <child id="7554398283340318476" name="type" index="3ix9CU" />
       </concept>
       <concept id="7554398283340741814" name="org.iets3.core.expr.lambda.structure.ShortLambdaExpression" flags="ng" index="3izI60" />
@@ -1519,5 +1546,465 @@
     </node>
     <node concept="_ixoA" id="6HHp2WmWx5x" role="_iOnB" />
   </node>
+  <node concept="_iOnU" id="449GR6ed7OO">
+    <property role="1XBH2A" value="true" />
+    <property role="TrG5h" value="LambdaPerformance" />
+    <node concept="_ixoA" id="5Uvdaw9dYmy" role="_iOnB" />
+    <node concept="2zPypq" id="449GR6ed830" role="_iOnB">
+      <property role="TrG5h" value="max" />
+      <node concept="30bXRB" id="XbOhLjWL0v" role="2lDidJ">
+        <property role="30bXRw" value="50" />
+      </node>
+    </node>
+    <node concept="2zPypq" id="449GR6ed8cj" role="_iOnB">
+      <property role="TrG5h" value="numbers" />
+      <node concept="1QScDb" id="XbOhLkclC6" role="2lDidJ">
+        <node concept="2TEanv" id="XbOhLkcmmG" role="1QScD9" />
+        <node concept="1QScDb" id="2gng9$EsDaL" role="2lDidJ">
+          <node concept="30bsCy" id="2gng9$EsCwT" role="2lDidJ">
+            <node concept="30bXRB" id="2gng9$EsCPr" role="2lDidJ">
+              <property role="30bXRw" value="1" />
+            </node>
+          </node>
+          <node concept="1hzhIm" id="2gng9$Ets0H" role="1QScD9">
+            <node concept="30dDZf" id="XbOhLjT4x6" role="2lDidJ">
+              <node concept="30bXRB" id="XbOhLjT4Ma" role="30dEs_">
+                <property role="30bXRw" value="1" />
+              </node>
+              <node concept="_emDc" id="2gng9$EtsuZ" role="30dEsF">
+                <ref role="_emDf" node="449GR6ed830" resolve="max" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="_ixoA" id="XbOhLk4HWv" role="_iOnB" />
+    <node concept="1aga60" id="2gng9$ErMtY" role="_iOnB">
+      <property role="TrG5h" value="shortlambdatest" />
+      <node concept="1aduha" id="2gng9$ErMQD" role="1ahQXP">
+        <node concept="2fGnzi" id="2gng9$ErWbE" role="1aduh9">
+          <node concept="2fGnzd" id="2gng9$ErWbF" role="2fGnxs">
+            <node concept="30d7iD" id="2gng9$ErWMt" role="2fGnzS">
+              <node concept="30bXRB" id="2gng9$ErWM$" role="30dEs_">
+                <property role="30bXRw" value="1" />
+              </node>
+              <node concept="1QScDb" id="2gng9$ErWr_" role="30dEsF">
+                <node concept="3iB8M5" id="2gng9$ErWDI" role="1QScD9" />
+                <node concept="1afdae" id="2gng9$ErWnq" role="2lDidJ">
+                  <ref role="1afue_" node="2gng9$ErMUZ" resolve="list" />
+                </node>
+              </node>
+            </node>
+            <node concept="1af_rf" id="2gng9$ErNIE" role="2fGnzA">
+              <ref role="1afhQb" node="2gng9$ErMtY" resolve="shortlambdatest" />
+              <node concept="1QScDb" id="2gng9$ErOaG" role="1afhQ5">
+                <node concept="1afdae" id="2gng9$ErO5x" role="2lDidJ">
+                  <ref role="1afue_" node="2gng9$ErMUZ" resolve="list" />
+                </node>
+                <node concept="3izCyS" id="2gng9$ErTOI" role="1QScD9">
+                  <node concept="3izI60" id="2gng9$ErUaC" role="2lDidJ">
+                    <node concept="30d7iD" id="2gng9$ErUnq" role="2lDidJ">
+                      <node concept="2yLE0X" id="2gng9$EsncR" role="30dEs_">
+                        <node concept="30bXRB" id="2gng9$EsncZ" role="2yLE0W">
+                          <property role="30bXRw" value="0" />
+                        </node>
+                        <node concept="1afdae" id="2gng9$ErUxK" role="2lDidJ">
+                          <ref role="1afue_" node="2gng9$ErMUZ" resolve="list" />
+                        </node>
+                      </node>
+                      <node concept="3izPEI" id="2gng9$ErUgD" role="30dEsF" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="2fGnzd" id="2gng9$ErWbG" role="2fGnxs">
+            <node concept="2yLE0X" id="2gng9$Esqpm" role="2fGnzA">
+              <node concept="30bXRB" id="2gng9$Esqpu" role="2yLE0W">
+                <property role="30bXRw" value="0" />
+              </node>
+              <node concept="1afdae" id="2gng9$ErXUi" role="2lDidJ">
+                <ref role="1afue_" node="2gng9$ErMUZ" resolve="list" />
+              </node>
+            </node>
+            <node concept="2fHqz8" id="2gng9$ErZpK" role="2fGnzS" />
+          </node>
+        </node>
+      </node>
+      <node concept="1ahQXy" id="2gng9$ErMUZ" role="1ahQWs">
+        <property role="TrG5h" value="list" />
+        <node concept="3iBYCm" id="2gng9$EslCm" role="3ix9CU">
+          <node concept="mLuIC" id="2gng9$Esm11" role="3iBWmK" />
+        </node>
+      </node>
+      <node concept="mLuIC" id="2gng9$ErV_$" role="2zM23F" />
+    </node>
+    <node concept="1aga60" id="2gng9$Es3DU" role="_iOnB">
+      <property role="TrG5h" value="lambdatest" />
+      <node concept="1aduha" id="2gng9$Es3DV" role="1ahQXP">
+        <node concept="2fGnzi" id="2gng9$Es3DW" role="1aduh9">
+          <node concept="2fGnzd" id="2gng9$Es3DX" role="2fGnxs">
+            <node concept="30d7iD" id="2gng9$Es3DY" role="2fGnzS">
+              <node concept="30bXRB" id="2gng9$Es3DZ" role="30dEs_">
+                <property role="30bXRw" value="1" />
+              </node>
+              <node concept="1QScDb" id="2gng9$Es3E0" role="30dEsF">
+                <node concept="3iB8M5" id="2gng9$Es3E1" role="1QScD9" />
+                <node concept="1afdae" id="2gng9$Es3E2" role="2lDidJ">
+                  <ref role="1afue_" node="2gng9$Es3Ei" resolve="list" />
+                </node>
+              </node>
+            </node>
+            <node concept="1af_rf" id="2gng9$Es3E3" role="2fGnzA">
+              <ref role="1afhQb" node="2gng9$Es3DU" resolve="lambdatest" />
+              <node concept="1QScDb" id="2gng9$Es3E4" role="1afhQ5">
+                <node concept="1afdae" id="2gng9$Es3E5" role="2lDidJ">
+                  <ref role="1afue_" node="2gng9$Es3Ei" resolve="list" />
+                </node>
+                <node concept="3izCyS" id="2gng9$Es3E6" role="1QScD9">
+                  <node concept="3ix9CK" id="2gng9$Es5eN" role="2lDidJ">
+                    <node concept="3ix9CS" id="2gng9$Es5eO" role="3ix9CL">
+                      <property role="TrG5h" value="it" />
+                      <node concept="mLuIC" id="2gng9$Es5nB" role="3ix9CU" />
+                    </node>
+                    <node concept="30d7iD" id="2gng9$Es5_I" role="3ix9pP">
+                      <node concept="2yLE0X" id="2gng9$Esp6w" role="30dEs_">
+                        <node concept="30bXRB" id="2gng9$Esp6C" role="2yLE0W">
+                          <property role="30bXRw" value="0" />
+                        </node>
+                        <node concept="1afdae" id="2gng9$Es5IZ" role="2lDidJ">
+                          <ref role="1afue_" node="2gng9$Es3Ei" resolve="list" />
+                        </node>
+                      </node>
+                      <node concept="3ix4Yz" id="2gng9$Es5rO" role="30dEsF">
+                        <ref role="3ix4Yw" node="2gng9$Es5eO" resolve="it" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="2fGnzd" id="2gng9$Es3Ed" role="2fGnxs">
+            <node concept="2yLE0X" id="2gng9$Esoic" role="2fGnzA">
+              <node concept="1afdae" id="2gng9$Es3Eg" role="2lDidJ">
+                <ref role="1afue_" node="2gng9$Es3Ei" resolve="list" />
+              </node>
+              <node concept="30bXRB" id="2gng9$EWPJC" role="2yLE0W">
+                <property role="30bXRw" value="0" />
+              </node>
+            </node>
+            <node concept="2fHqz8" id="2gng9$Es3Eh" role="2fGnzS" />
+          </node>
+        </node>
+      </node>
+      <node concept="1ahQXy" id="2gng9$Es3Ei" role="1ahQWs">
+        <property role="TrG5h" value="list" />
+        <node concept="3iBYCm" id="2gng9$EsjTk" role="3ix9CU">
+          <node concept="mLuIC" id="2gng9$EskcQ" role="3iBWmK" />
+        </node>
+      </node>
+      <node concept="mLuIC" id="2gng9$Esrh7" role="2zM23F" />
+    </node>
+    <node concept="_ixoA" id="2gng9$ErVaJ" role="_iOnB" />
+    <node concept="_fkuM" id="XbOhLjT0GZ" role="_iOnB">
+      <property role="TrG5h" value="test1" />
+      <node concept="_fkuZ" id="2gng9$ErZSH" role="_fkp5">
+        <node concept="_fku$" id="2gng9$ErZSI" role="_fkur" />
+        <node concept="1af_rf" id="2gng9$Es014" role="_fkuY">
+          <ref role="1afhQb" node="2gng9$ErMtY" resolve="shortlambdatest" />
+          <node concept="_emDc" id="2gng9$Es09l" role="1afhQ5">
+            <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+          </node>
+        </node>
+        <node concept="_emDc" id="2gng9$Es2P6" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+      <node concept="_fkuZ" id="2gng9$Es6ns" role="_fkp5">
+        <node concept="_fku$" id="2gng9$Es6nt" role="_fkur" />
+        <node concept="1af_rf" id="2gng9$Es6nu" role="_fkuY">
+          <ref role="1afhQb" node="2gng9$Es3DU" resolve="lambdatest" />
+          <node concept="_emDc" id="2gng9$Es6nv" role="1afhQ5">
+            <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+          </node>
+        </node>
+        <node concept="_emDc" id="2gng9$Es6nw" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+    </node>
+    <node concept="_ixoA" id="XbOhLjT0GT" role="_iOnB" />
+    <node concept="_ixoA" id="XbOhLjT0GV" role="_iOnB" />
+    <node concept="_ixoA" id="1joq1DK80Fd" role="_iOnB" />
+    <node concept="_ixoA" id="3t5WX7ItVme" role="_iOnB" />
+    <node concept="_fkuM" id="449GR6ed7OP" role="_iOnB">
+      <property role="TrG5h" value="test2" />
+      <node concept="_fkuZ" id="1joq1DKd1cx" role="_fkp5">
+        <node concept="_fku$" id="1joq1DKd1cy" role="_fkur" />
+        <node concept="1QScDb" id="1joq1DKd1c_" role="_fkuY">
+          <node concept="3iB8M5" id="3sgpXexhBbF" role="1QScD9" />
+          <node concept="1QScDb" id="1joq1DKd1cB" role="2lDidJ">
+            <node concept="3izCyS" id="XbOhLk49Ml" role="1QScD9">
+              <node concept="3ix9CK" id="XbOhLk4aua" role="2lDidJ">
+                <node concept="3ix9CS" id="XbOhLk4aub" role="3ix9CL">
+                  <property role="TrG5h" value="it" />
+                  <node concept="mLuIC" id="XbOhLk4auc" role="3ix9CU" />
+                </node>
+                <node concept="30deo4" id="XbOhLk4aud" role="3ix9pP">
+                  <node concept="30deo4" id="XbOhLk4aue" role="30dEsF">
+                    <node concept="30deo4" id="XbOhLk4auf" role="30dEsF">
+                      <node concept="30deo4" id="XbOhLk4aug" role="30dEsF">
+                        <node concept="30d7iD" id="XbOhLk4auh" role="30dEsF">
+                          <node concept="3ix4Yz" id="XbOhLk4aui" role="30dEsF">
+                            <ref role="3ix4Yw" node="XbOhLk4aub" resolve="it" />
+                          </node>
+                          <node concept="30bXRB" id="XbOhLk4auj" role="30dEs_">
+                            <property role="30bXRw" value="0" />
+                          </node>
+                        </node>
+                        <node concept="30d7iD" id="XbOhLk4auk" role="30dEs_">
+                          <node concept="3ix4Yz" id="XbOhLk4aul" role="30dEsF">
+                            <ref role="3ix4Yw" node="XbOhLk4aub" resolve="it" />
+                          </node>
+                          <node concept="30bXRB" id="XbOhLk4aum" role="30dEs_">
+                            <property role="30bXRw" value="-1" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="30d7iD" id="XbOhLk4aun" role="30dEs_">
+                        <node concept="3ix4Yz" id="XbOhLk4auo" role="30dEsF">
+                          <ref role="3ix4Yw" node="XbOhLk4aub" resolve="it" />
+                        </node>
+                        <node concept="30bXRB" id="XbOhLk4aup" role="30dEs_">
+                          <property role="30bXRw" value="-2" />
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="30d7iD" id="XbOhLk4auq" role="30dEs_">
+                      <node concept="3ix4Yz" id="XbOhLk4aur" role="30dEsF">
+                        <ref role="3ix4Yw" node="XbOhLk4aub" resolve="it" />
+                      </node>
+                      <node concept="30bXRB" id="XbOhLk4aus" role="30dEs_">
+                        <property role="30bXRw" value="-3" />
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="30d7iD" id="XbOhLk4aut" role="30dEs_">
+                    <node concept="30bXRB" id="XbOhLk4auu" role="30dEs_">
+                      <property role="30bXRw" value="-4" />
+                    </node>
+                    <node concept="3ix4Yz" id="XbOhLk4auv" role="30dEsF">
+                      <ref role="3ix4Yw" node="XbOhLk4aub" resolve="it" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="_emDc" id="1joq1DKd1cZ" role="2lDidJ">
+              <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+            </node>
+          </node>
+        </node>
+        <node concept="_emDc" id="1joq1DKfka5" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+      <node concept="_fkuZ" id="1joq1DKd1c4" role="_fkp5">
+        <node concept="_fku$" id="1joq1DKd1c5" role="_fkur" />
+        <node concept="1QScDb" id="1joq1DKd1c8" role="_fkuY">
+          <node concept="3iB8M5" id="3sgpXexhBVh" role="1QScD9" />
+          <node concept="1QScDb" id="1joq1DKd1ca" role="2lDidJ">
+            <node concept="3izCyS" id="XbOhLk4bQa" role="1QScD9">
+              <node concept="3izI60" id="5s__jxCoG63" role="2lDidJ">
+                <node concept="30deo4" id="5s__jxCoG64" role="2lDidJ">
+                  <node concept="30deo4" id="5s__jxCoG65" role="30dEsF">
+                    <node concept="30deo4" id="5s__jxCoG66" role="30dEsF">
+                      <node concept="30deo4" id="5s__jxCoG67" role="30dEsF">
+                        <node concept="30d7iD" id="5s__jxCoG68" role="30dEsF">
+                          <node concept="3izPEI" id="5s__jxCoG69" role="30dEsF" />
+                          <node concept="30bXRB" id="5s__jxCoG6a" role="30dEs_">
+                            <property role="30bXRw" value="0" />
+                          </node>
+                        </node>
+                        <node concept="30d7iD" id="5s__jxCoG6b" role="30dEs_">
+                          <node concept="3izPEI" id="5s__jxCoG6c" role="30dEsF" />
+                          <node concept="30bXRB" id="5s__jxCoG6d" role="30dEs_">
+                            <property role="30bXRw" value="-1" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="30d7iD" id="5s__jxCoG6e" role="30dEs_">
+                        <node concept="3izPEI" id="5s__jxCoG6f" role="30dEsF" />
+                        <node concept="30bXRB" id="5s__jxCoG6g" role="30dEs_">
+                          <property role="30bXRw" value="-2" />
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="30d7iD" id="5s__jxCoG6h" role="30dEs_">
+                      <node concept="3izPEI" id="5s__jxCoG6i" role="30dEsF" />
+                      <node concept="30bXRB" id="5s__jxCoG6j" role="30dEs_">
+                        <property role="30bXRw" value="-3" />
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="30d7iD" id="5s__jxCoG6k" role="30dEs_">
+                    <node concept="30bXRB" id="5s__jxCoG6l" role="30dEs_">
+                      <property role="30bXRw" value="-4" />
+                    </node>
+                    <node concept="3izPEI" id="5s__jxCoG6m" role="30dEsF" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="_emDc" id="1joq1DKd1cw" role="2lDidJ">
+              <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+            </node>
+          </node>
+        </node>
+        <node concept="_emDc" id="1joq1DKfk5C" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+      <node concept="_fkuZ" id="5s__jxC$3ju" role="_fkp5">
+        <node concept="_fku$" id="5s__jxC$3jv" role="_fkur" />
+        <node concept="1QScDb" id="5s__jxC$3jw" role="_fkuY">
+          <node concept="3iB8M5" id="5s__jxC$3jx" role="1QScD9" />
+          <node concept="1QScDb" id="5s__jxC$3jy" role="2lDidJ">
+            <node concept="3izCyS" id="5s__jxC$3jz" role="1QScD9">
+              <node concept="3izI60" id="5s__jxC$3j$" role="2lDidJ">
+                <node concept="30deo4" id="5s__jxC$3j_" role="2lDidJ">
+                  <node concept="30deo4" id="5s__jxC$3jA" role="30dEsF">
+                    <node concept="30deo4" id="5s__jxC$3jB" role="30dEsF">
+                      <node concept="30deo4" id="5s__jxC$3jC" role="30dEsF">
+                        <node concept="30d7iD" id="5s__jxC$3jD" role="30dEsF">
+                          <node concept="3izPEI" id="5s__jxC$3jE" role="30dEsF" />
+                          <node concept="30bXRB" id="5s__jxC$3jF" role="30dEs_">
+                            <property role="30bXRw" value="0" />
+                          </node>
+                        </node>
+                        <node concept="30d7iD" id="5s__jxC$3jG" role="30dEs_">
+                          <node concept="3izPEI" id="5s__jxC$3jH" role="30dEsF" />
+                          <node concept="30bXRB" id="5s__jxC$3jI" role="30dEs_">
+                            <property role="30bXRw" value="-1" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="30d7iD" id="5s__jxC$3jJ" role="30dEs_">
+                        <node concept="3izPEI" id="5s__jxC$3jK" role="30dEsF" />
+                        <node concept="30bXRB" id="5s__jxC$3jL" role="30dEs_">
+                          <property role="30bXRw" value="-2" />
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="30d7iD" id="5s__jxC$3jM" role="30dEs_">
+                      <node concept="3izPEI" id="5s__jxC$3jN" role="30dEsF" />
+                      <node concept="30bXRB" id="5s__jxC$3jO" role="30dEs_">
+                        <property role="30bXRw" value="-3" />
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="30d7iD" id="5s__jxC$3jP" role="30dEs_">
+                    <node concept="30bXRB" id="5s__jxC$3jQ" role="30dEs_">
+                      <property role="30bXRw" value="-4" />
+                    </node>
+                    <node concept="3izPEI" id="5s__jxC$3jR" role="30dEsF" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="_emDc" id="5s__jxC$3jS" role="2lDidJ">
+              <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+            </node>
+          </node>
+        </node>
+        <node concept="_emDc" id="5s__jxC$3jT" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+      <node concept="_fkuZ" id="5s__jxDPvTF" role="_fkp5">
+        <node concept="_fku$" id="5s__jxDPvTG" role="_fkur" />
+        <node concept="1QScDb" id="5s__jxDPvTH" role="_fkuY">
+          <node concept="3iB8M5" id="5s__jxDPvTI" role="1QScD9" />
+          <node concept="1QScDb" id="5s__jxDPvTJ" role="2lDidJ">
+            <node concept="3izCyS" id="5s__jxDPvTK" role="1QScD9">
+              <node concept="3ix9CK" id="5s__jxDPvTL" role="2lDidJ">
+                <node concept="3ix9CS" id="5s__jxDPvTM" role="3ix9CL">
+                  <property role="TrG5h" value="it" />
+                  <node concept="mLuIC" id="5s__jxDPvTN" role="3ix9CU" />
+                </node>
+                <node concept="30deo4" id="5s__jxDPvTO" role="3ix9pP">
+                  <node concept="30deo4" id="5s__jxDPvTP" role="30dEsF">
+                    <node concept="30deo4" id="5s__jxDPvTQ" role="30dEsF">
+                      <node concept="30deo4" id="5s__jxDPvTR" role="30dEsF">
+                        <node concept="30d7iD" id="5s__jxDPvTS" role="30dEsF">
+                          <node concept="3ix4Yz" id="5s__jxDPvTT" role="30dEsF">
+                            <ref role="3ix4Yw" node="5s__jxDPvTM" resolve="it" />
+                          </node>
+                          <node concept="30bXRB" id="5s__jxDPvTU" role="30dEs_">
+                            <property role="30bXRw" value="0" />
+                          </node>
+                        </node>
+                        <node concept="30d7iD" id="5s__jxDPvTV" role="30dEs_">
+                          <node concept="3ix4Yz" id="5s__jxDPvTW" role="30dEsF">
+                            <ref role="3ix4Yw" node="5s__jxDPvTM" resolve="it" />
+                          </node>
+                          <node concept="30bXRB" id="5s__jxDPvTX" role="30dEs_">
+                            <property role="30bXRw" value="-1" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="30d7iD" id="5s__jxDPvTY" role="30dEs_">
+                        <node concept="3ix4Yz" id="5s__jxDPvTZ" role="30dEsF">
+                          <ref role="3ix4Yw" node="5s__jxDPvTM" resolve="it" />
+                        </node>
+                        <node concept="30bXRB" id="5s__jxDPvU0" role="30dEs_">
+                          <property role="30bXRw" value="-2" />
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="30d7iD" id="5s__jxDPvU1" role="30dEs_">
+                      <node concept="3ix4Yz" id="5s__jxDPvU2" role="30dEsF">
+                        <ref role="3ix4Yw" node="5s__jxDPvTM" resolve="it" />
+                      </node>
+                      <node concept="30bXRB" id="5s__jxDPvU3" role="30dEs_">
+                        <property role="30bXRw" value="-3" />
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="30d7iD" id="5s__jxDPvU4" role="30dEs_">
+                    <node concept="30bXRB" id="5s__jxDPvU5" role="30dEs_">
+                      <property role="30bXRw" value="-4" />
+                    </node>
+                    <node concept="3ix4Yz" id="5s__jxDPvU6" role="30dEsF">
+                      <ref role="3ix4Yw" node="5s__jxDPvTM" resolve="it" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="_emDc" id="5s__jxDPvU7" role="2lDidJ">
+              <ref role="_emDf" node="449GR6ed8cj" resolve="numbers" />
+            </node>
+          </node>
+        </node>
+        <node concept="_emDc" id="5s__jxDPvU8" role="_fkuS">
+          <ref role="_emDf" node="449GR6ed830" resolve="max" />
+        </node>
+      </node>
+      <node concept="1z9TsT" id="3t5WX7ItVmk" role="lGtFl">
+        <node concept="OjmMv" id="3t5WX7ItVml" role="1w35rA">
+          <node concept="19SGf9" id="3t5WX7ItVmm" role="OjmMu">
+            <node concept="19SUe$" id="3t5WX7ItVmn" role="19SJt6">
+              <property role="19SUeA" value="TODO: create an assert statement to compare execution/evaluation time  of different expressions" />
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="_ixoA" id="5Uvdaw9eDHf" role="_iOnB" />
+  </node>
 </model>