diff --git a/samples/TTTwitter/Classes/AppDelegate.m b/samples/TTTwitter/Classes/AppDelegate.m
index 937cf10544..a58c08b1d5 100644
--- a/samples/TTTwitter/Classes/AppDelegate.m
+++ b/samples/TTTwitter/Classes/AppDelegate.m
@@ -26,7 +26,7 @@ @implementation AppDelegate
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 - (void)applicationDidFinishLaunching:(UIApplication *)application {
   TTNavigator* navigator = [TTNavigator navigator];
-  navigator.persistenceMode = TTNavigatorPersistenceModeAll;
+  navigator.persistenceMode = TTNavigatorPersistenceModeNone;
 
   TTURLMap* map = navigator.URLMap;
 
diff --git a/samples/TTTwitter/Classes/Atlas.h b/samples/TTTwitter/Classes/Atlas.h
new file mode 100644
index 0000000000..31a02fe300
--- /dev/null
+++ b/samples/TTTwitter/Classes/Atlas.h
@@ -0,0 +1,19 @@
+//
+// Copyright 2009-2010 Facebook
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#import <Foundation/Foundation.h>
+
+extern NSString* kAppRootURLPath;
diff --git a/samples/TTTwitter/Classes/Atlas.m b/samples/TTTwitter/Classes/Atlas.m
new file mode 100644
index 0000000000..fabf6e96c2
--- /dev/null
+++ b/samples/TTTwitter/Classes/Atlas.m
@@ -0,0 +1,19 @@
+//
+// Copyright 2009-2010 Facebook
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#import "Atlas.h"
+
+NSString* kAppRootURLPath = @"tt://root";
diff --git a/samples/TTTwitter/TTTwitter.xcodeproj/project.pbxproj b/samples/TTTwitter/TTTwitter.xcodeproj/project.pbxproj
index 5e20a6ab08..9aa1a6fd2d 100755
--- a/samples/TTTwitter/TTTwitter.xcodeproj/project.pbxproj
+++ b/samples/TTTwitter/TTTwitter.xcodeproj/project.pbxproj
@@ -12,6 +12,7 @@
 		1D60589F0D05DD5A006BFB54 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1D30AB110D05D00D00671497 /* Foundation.framework */; };
 		1DF5F4E00D08C38300B7A737 /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1DF5F4DF0D08C38300B7A737 /* UIKit.framework */; };
 		288765FD0DF74451002DB57D /* CoreGraphics.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 288765FC0DF74451002DB57D /* CoreGraphics.framework */; };
+		6E10599C112CCCC400549F42 /* Atlas.m in Sources */ = {isa = PBXBuildFile; fileRef = 6E10599B112CCCC400549F42 /* Atlas.m */; };
 		EB383B6110BBF6200000B2D2 /* libThree20.a in Frameworks */ = {isa = PBXBuildFile; fileRef = EB383B5F10BBF6180000B2D2 /* libThree20.a */; };
 		EB383B6510BBF62B0000B2D2 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = EB383B6410BBF62B0000B2D2 /* QuartzCore.framework */; };
 		EB383B6D10BBF6360000B2D2 /* Three20.bundle in Resources */ = {isa = PBXBuildFile; fileRef = EB383B6C10BBF6360000B2D2 /* Three20.bundle */; };
@@ -50,6 +51,8 @@
 		288765FC0DF74451002DB57D /* CoreGraphics.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CoreGraphics.framework; path = System/Library/Frameworks/CoreGraphics.framework; sourceTree = SDKROOT; };
 		29B97316FDCFA39411CA2CEA /* main.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
 		32CA4F630368D1EE00C91783 /* TTTwitter_Prefix.pch */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TTTwitter_Prefix.pch; sourceTree = "<group>"; };
+		6E10599A112CCCC400549F42 /* Atlas.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Atlas.h; sourceTree = "<group>"; };
+		6E10599B112CCCC400549F42 /* Atlas.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Atlas.m; sourceTree = "<group>"; };
 		8D1107310486CEB800E47090 /* TTTwitter-Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "TTTwitter-Info.plist"; plistStructureDefinitionIdentifier = "com.apple.xcode.plist.structure-definition.iphone.info-plist"; sourceTree = "<group>"; };
 		EB383B5710BBF6180000B2D2 /* Three20.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = Three20.xcodeproj; path = ../../src/Three20.xcodeproj; sourceTree = SOURCE_ROOT; };
 		EB383B6410BBF62B0000B2D2 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
@@ -77,6 +80,8 @@
 			children = (
 				1D3623240D0F684500981E51 /* AppDelegate.h */,
 				1D3623250D0F684500981E51 /* AppDelegate.m */,
+				6E10599A112CCCC400549F42 /* Atlas.h */,
+				6E10599B112CCCC400549F42 /* Atlas.m */,
 			);
 			path = Classes;
 			sourceTree = "<group>";
@@ -219,6 +224,7 @@
 			files = (
 				1D60589B0D05DD56006BFB54 /* main.m in Sources */,
 				1D3623260D0F684500981E51 /* AppDelegate.m in Sources */,
+				6E10599C112CCCC400549F42 /* Atlas.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/samples/TTTwitter/TTTwitter_Prefix.pch b/samples/TTTwitter/TTTwitter_Prefix.pch
index bfffe6505b..3a694221ff 100644
--- a/samples/TTTwitter/TTTwitter_Prefix.pch
+++ b/samples/TTTwitter/TTTwitter_Prefix.pch
@@ -6,4 +6,5 @@
   #import <Foundation/Foundation.h>
   #import <UIKit/UIKit.h>
   #import "Three20/Three20.h"
+  #import "Atlas.h"
 #endif