Index: /v2/trunk/de.ugoe.cs.swe.bnftools.ebnf/src/de/ugoe/cs/swe/bnftools/GenerateEBNF.mwe2
===================================================================
--- /v2/trunk/de.ugoe.cs.swe.bnftools.ebnf/src/de/ugoe/cs/swe/bnftools/GenerateEBNF.mwe2	(revision 90)
+++ /v2/trunk/de.ugoe.cs.swe.bnftools.ebnf/src/de/ugoe/cs/swe/bnftools/GenerateEBNF.mwe2	(revision 91)
@@ -66,7 +66,8 @@
     		// The antlr parser generator fragment.
     		fragment = parser.antlr.XtextAntlrGeneratorFragment auto-inject {
-    		//  options = {
-    		//      backtrack = true
-    		//  }
+    		  options = {
+    		    backtrack = true
+				memoize = true
+    		  }
     		}
     
@@ -106,5 +107,10 @@
     
     		// generates a more lightweight Antlr parser and lexer tailored for content assist
-    		fragment = parser.antlr.XtextAntlrUiGeneratorFragment auto-inject {}
+    		fragment = parser.antlr.XtextAntlrUiGeneratorFragment auto-inject {
+     		  options = {
+    		    backtrack = true
+				memoize = true
+    		  }   			
+    		}
     
     		// generates junit test support classes into Generator#pathTestProject