diff --git a/KREngine/KREngine.xcodeproj/project.pbxproj b/KREngine/KREngine.xcodeproj/project.pbxproj
index 4d15e02..14fe7cb 100644
--- a/KREngine/KREngine.xcodeproj/project.pbxproj
+++ b/KREngine/KREngine.xcodeproj/project.pbxproj
@@ -43,6 +43,16 @@
 		E46DBE801512AF4600D59F86 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E491016413C99B9E0098455B /* Foundation.framework */; };
 		E46DBE811512AFE600D59F86 /* KRMesh.h in Headers */ = {isa = PBXBuildFile; fileRef = E49E79FC15126146009CF99C /* KRMesh.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		E46DBE851512B9FA00D59F86 /* KREngine-common.h in Headers */ = {isa = PBXBuildFile; fileRef = E46DBE841512B9E200D59F86 /* KREngine-common.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		E46F4A00155DF46700CCF8B8 /* KRWorld.h in Headers */ = {isa = PBXBuildFile; fileRef = E46F49FF155DF46700CCF8B8 /* KRWorld.h */; };
+		E46F4A01155DF46700CCF8B8 /* KRWorld.h in Headers */ = {isa = PBXBuildFile; fileRef = E46F49FF155DF46700CCF8B8 /* KRWorld.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		E46F4A04155DF47C00CCF8B8 /* KRWorld.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E46F4A03155DF47C00CCF8B8 /* KRWorld.cpp */; };
+		E46F4A05155DF47C00CCF8B8 /* KRWorld.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E46F4A03155DF47C00CCF8B8 /* KRWorld.cpp */; };
+		E46F4A09155DF6E400CCF8B8 /* KRWorld.cpp in Headers */ = {isa = PBXBuildFile; fileRef = E46F4A03155DF47C00CCF8B8 /* KRWorld.cpp */; settings = {ATTRIBUTES = (Public, ); }; };
+		E46F4A0B155E002100CCF8B8 /* KRDataBlock.h in Headers */ = {isa = PBXBuildFile; fileRef = E46F4A0A155E002100CCF8B8 /* KRDataBlock.h */; };
+		E46F4A0C155E002100CCF8B8 /* KRDataBlock.h in Headers */ = {isa = PBXBuildFile; fileRef = E46F4A0A155E002100CCF8B8 /* KRDataBlock.h */; };
+		E46F4A0E155E003000CCF8B8 /* KRDataBlock.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E46F4A0D155E003000CCF8B8 /* KRDataBlock.cpp */; };
+		E46F4A0F155E003000CCF8B8 /* KRDataBlock.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E46F4A0D155E003000CCF8B8 /* KRDataBlock.cpp */; };
+		E46F4A10155E004100CCF8B8 /* KRDataBlock.cpp in Headers */ = {isa = PBXBuildFile; fileRef = E46F4A0D155E003000CCF8B8 /* KRDataBlock.cpp */; settings = {ATTRIBUTES = (Public, ); }; };
 		E47C25A213F4F65A00FF4370 /* KRShaderManager.h in Headers */ = {isa = PBXBuildFile; fileRef = E47C25A113F4F65A00FF4370 /* KRShaderManager.h */; };
 		E47C25A513F4F66F00FF4370 /* KRShader.h in Headers */ = {isa = PBXBuildFile; fileRef = E47C25A413F4F66F00FF4370 /* KRShader.h */; };
 		E47C25A713F4F6AB00FF4370 /* KRShaderManager.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E47C25A613F4F6AB00FF4370 /* KRShaderManager.cpp */; };
@@ -170,6 +180,10 @@
 		E46C214A15364DEC009CABF3 /* KRSceneManager.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = KRSceneManager.cpp; path = Classes/KRSceneManager.cpp; sourceTree = "<group>"; };
 		E46DBE7D1512AD4900D59F86 /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/OpenGL.framework; sourceTree = DEVELOPER_DIR; };
 		E46DBE841512B9E200D59F86 /* KREngine-common.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "KREngine-common.h"; path = "Classes/KREngine-common.h"; sourceTree = "<group>"; };
+		E46F49FF155DF46700CCF8B8 /* KRWorld.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = KRWorld.h; path = Classes/KRWorld.h; sourceTree = "<group>"; };
+		E46F4A03155DF47C00CCF8B8 /* KRWorld.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = KRWorld.cpp; path = Classes/KRWorld.cpp; sourceTree = "<group>"; };
+		E46F4A0A155E002100CCF8B8 /* KRDataBlock.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = KRDataBlock.h; path = Classes/KRDataBlock.h; sourceTree = "<group>"; };
+		E46F4A0D155E003000CCF8B8 /* KRDataBlock.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = KRDataBlock.cpp; path = Classes/KRDataBlock.cpp; sourceTree = "<group>"; };
 		E47C25A113F4F65A00FF4370 /* KRShaderManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = KRShaderManager.h; path = Classes/KRShaderManager.h; sourceTree = "<group>"; };
 		E47C25A413F4F66F00FF4370 /* KRShader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; name = KRShader.h; path = Classes/KRShader.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		E47C25A613F4F6AB00FF4370 /* KRShaderManager.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = KRShaderManager.cpp; path = Classes/KRShaderManager.cpp; sourceTree = "<group>"; };
@@ -438,6 +452,10 @@
 				E46C214A15364DEC009CABF3 /* KRSceneManager.cpp */,
 				E48C696E15374F5A00232E28 /* KRContext.h */,
 				E48C697115374F7E00232E28 /* KRContext.cpp */,
+				E46F49FF155DF46700CCF8B8 /* KRWorld.h */,
+				E46F4A0A155E002100CCF8B8 /* KRDataBlock.h */,
+				E46F4A0D155E003000CCF8B8 /* KRDataBlock.cpp */,
+				E46F4A03155DF47C00CCF8B8 /* KRWorld.cpp */,
 			);
 			name = Classes;
 			sourceTree = "<group>";
@@ -515,6 +533,8 @@
 				E4F975321536220900FD60B2 /* KRNode.h in Headers */,
 				E46C214715364BC8009CABF3 /* tinyxml2.h in Headers */,
 				E48C696F15374F5B00232E28 /* KRContext.h in Headers */,
+				E46F4A00155DF46700CCF8B8 /* KRWorld.h in Headers */,
+				E46F4A0B155E002100CCF8B8 /* KRDataBlock.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -542,13 +562,17 @@
 				E461A153152E54B500F2044A /* KRLight.h in Headers */,
 				E4F97552153633EF00FD60B2 /* KRMaterialManager.h in Headers */,
 				E461A176152E5C5600F2044A /* KRPointLight.h in Headers */,
+				E46F4A09155DF6E400CCF8B8 /* KRWorld.cpp in Headers */,
 				E4F975541536340400FD60B2 /* KRTexture.h in Headers */,
+				E46F4A01155DF46700CCF8B8 /* KRWorld.h in Headers */,
 				E48C697015374F5B00232E28 /* KRContext.h in Headers */,
+				E46F4A10155E004100CCF8B8 /* KRDataBlock.cpp in Headers */,
 				E4D13365153767FF0070068C /* KRShaderManager.h in Headers */,
 				E461A15D152E563100F2044A /* KRDirectionalLight.h in Headers */,
 				E461A169152E570700F2044A /* KRSpotLight.h in Headers */,
 				E46C214815364BC8009CABF3 /* tinyxml2.h in Headers */,
 				E46A6B701559EF0A000DBD37 /* KRResource+blend.h in Headers */,
+				E46F4A0C155E002100CCF8B8 /* KRDataBlock.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -665,6 +689,8 @@
 				E4D133BC1538F7560070068C /* light_directional.vsh in Sources */,
 				E4A9DEBE154120C4009DF363 /* light_point.fsh in Sources */,
 				E4A9DEC1154120E8009DF363 /* light_point.vsh in Sources */,
+				E46F4A04155DF47C00CCF8B8 /* KRWorld.cpp in Sources */,
+				E46F4A0E155E003000CCF8B8 /* KRDataBlock.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -700,6 +726,8 @@
 				E46C214C15364DEC009CABF3 /* KRSceneManager.cpp in Sources */,
 				E48C697315374F7E00232E28 /* KRContext.cpp in Sources */,
 				E46A6B6D1559E97D000DBD37 /* KRResource+blend.cpp in Sources */,
+				E46F4A05155DF47C00CCF8B8 /* KRWorld.cpp in Sources */,
+				E46F4A0F155E003000CCF8B8 /* KRDataBlock.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/KREngine/KREngine/Classes/KRDataBlock.cpp b/KREngine/KREngine/Classes/KRDataBlock.cpp
new file mode 100644
index 0000000..32178c1
--- /dev/null
+++ b/KREngine/KREngine/Classes/KRDataBlock.cpp
@@ -0,0 +1,42 @@
+//
+//  KRDataBlock.cpp
+//  KREngine
+//
+//  Created by Kearwood Gilbert on 12-05-11.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#include <iostream>
+
+#include "KRDataBlock.h"
+
+KRDataBlock::KRDataBlock() {
+    m_data = NULL;
+    m_data_size = 0;
+}
+
+KRDataBlock::~KRDataBlock() {
+    if(m_data) {
+        free(m_data);
+    }
+}
+
+void *KRDataBlock::getData() {
+    return m_data;
+}
+
+int KRDataBlock::getSize() {
+    return m_data_size;
+}
+
+void KRDataBlock::append(void *data, int size) {
+    if(m_data == NULL) {
+        m_data = malloc(size);
+        memcpy(m_data, data, size);
+        m_data_size = size;
+    } else {
+        m_data = realloc(m_data, m_data_size + size);
+        memcpy((unsigned char *)m_data + size, data, size);
+        m_data_size += size;
+    }
+}
\ No newline at end of file
diff --git a/KREngine/KREngine/Classes/KRDataBlock.h b/KREngine/KREngine/Classes/KRDataBlock.h
new file mode 100644
index 0000000..039e1c3
--- /dev/null
+++ b/KREngine/KREngine/Classes/KRDataBlock.h
@@ -0,0 +1,26 @@
+//
+//  KRDataBlock.h
+//  KREngine
+//
+//  Created by Kearwood Gilbert on 12-05-11.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#ifndef KREngine_KRDataBlock_h
+#define KREngine_KRDataBlock_h
+
+class KRDataBlock {
+public:
+    KRDataBlock();
+    ~KRDataBlock();
+    
+    void append(void *data, int size);
+    
+    void *getData();
+    int getSize();
+private:
+    void *m_data;
+    int m_data_size;
+};
+
+#endif
diff --git a/KREngine/KREngine/Classes/KRVector3.cpp b/KREngine/KREngine/Classes/KRVector3.cpp
index d58ead7..0da818c 100644
--- a/KREngine/KREngine/Classes/KRVector3.cpp
+++ b/KREngine/KREngine/Classes/KRVector3.cpp
@@ -39,6 +39,67 @@ KRVector3::KRVector3()
     z = 0.0f;
 }
 
+KRVector3 KRVector3::ZeroVector() {
+    return KRVector3(0.0f, 0.0f, 0.0f);
+}
+
+KRVector3 KRVector3::OneVector() {
+    return KRVector3(1.0f, 1.0f, 1.0f);
+}
+
+KRVector3 KRVector3::ForwardVector() {
+    return KRVector3(0.0f, 0.0f, 1.0f);
+}
+
+KRVector3 KRVector3::BackwardVector() {
+    return KRVector3(0.0f, 0.0f, -1.0f);
+}
+
+KRVector3 KRVector3::UpVector() {
+    return KRVector3(0.0f, 1.0f, 0.0f);
+}
+
+KRVector3 KRVector3::DownVector() {
+    return KRVector3(0.0f, -1.0f, 0.0f);
+}
+
+KRVector3 KRVector3::LeftVector() {
+    return KRVector3(-1.0f, 0.0f, 0.0f);
+}
+
+KRVector3 KRVector3::RightVector() {
+    return KRVector3(1.0f, 0.0f, 0.0f);
+}
+
+KRVector3 KRVector3::Lerp(const KRVector3 &v1, const KRVector3 &v2, float d) {
+    return v1 + (v2 - v1) * d;
+}
+
+KRVector3 KRVector3::Slerp(const KRVector3 &v1, const KRVector3 &v2, float d) {
+    // From: http://keithmaggio.wordpress.com/2011/02/15/math-magician-lerp-slerp-and-nlerp/
+    // Dot product - the cosine of the angle between 2 vectors.
+    float dot = KRVector3::Dot(v1, v2);     
+    // Clamp it to be in the range of Acos()
+    if(dot < -1.0f) dot = -1.0f;
+    if(dot > 1.0f) dot = 1.0f;
+    // Acos(dot) returns the angle between start and end,
+    // And multiplying that by percent returns the angle between
+    // start and the final result.
+    float theta = acos(dot)*d;
+    KRVector3 RelativeVec = v2 - v1*dot;
+    RelativeVec.normalize();     // Orthonormal basis
+    // The final result.
+    return ((v1*cos(theta)) + (RelativeVec*sin(theta)));
+}
+
+void KRVector3::OrthoNormalize(KRVector3 &normal, KRVector3 &tangent) {
+    // Gram-Schmidt Orthonormalization
+    normal.normalize();
+    KRVector3 proj = normal * Dot(tangent, normal);
+    tangent = tangent - proj;
+    tangent.normalize();
+}
+
 KRVector3::KRVector3(float v) {
     x = v;
     y = v;
@@ -73,7 +134,12 @@ KRVector3::~KRVector3()
 //calculate and return the magnitude of this vector
 float KRVector3::GetMagnitude()
 {
-    return sqrtf(x * x + y * y + z * z);
+    return sqrtf(GetSqrMagnitude());
+}
+
+float KRVector3::GetSqrMagnitude()
+{
+    return x * x + y * y + z * z;
 }
 
 //multiply this vector by a scalar
@@ -111,6 +177,10 @@ void KRVector3::normalize()
     z /= magnitude;
 }
 
+float KRVector3::Dot(const KRVector3 &v1, const KRVector3 &v2) {
+    return v1.x * v2.x + v1.y * v2.y + v1.z * v2.z;
+}
+
 //calculate and return dot product
 float KRVector3::dot(const KRVector3 &vec) const
 {
diff --git a/KREngine/KREngine/Classes/KRVector3.h b/KREngine/KREngine/Classes/KRVector3.h
index 4e91a3c..683a4b3 100644
--- a/KREngine/KREngine/Classes/KRVector3.h
+++ b/KREngine/KREngine/Classes/KRVector3.h
@@ -48,14 +48,30 @@ public:
     KRVector3();
 	~KRVector3();
     
+    static KRVector3 ZeroVector();
+    static KRVector3 OneVector();
+    static KRVector3 ForwardVector();
+    static KRVector3 BackwardVector();
+    static KRVector3 UpVector();
+    static KRVector3 DownVector();
+    static KRVector3 LeftVector();
+    static KRVector3 RightVector();
+    static KRVector3 Lerp(const KRVector3 &v1, const KRVector3 &v2, float d);
+    static KRVector3 Slerp(const KRVector3 &v1, const KRVector3 &v2, float d);
+    static float Dot(const KRVector3 &v1, const KRVector3 &v2);
+    static void OrthoNormalize(KRVector3 &normal, KRVector3 &tangent); // Gram-Schmidt Orthonormalization
+    
     KRVector3(const KRVector3& p);
     KRVector3& operator = ( const KRVector3& p );
     friend bool operator== (KRVector3 &v1, KRVector3 &v2);
     friend bool operator!= (KRVector3 &v1, KRVector3 &v2);
     
-	//calculate and return the magnitude of this vector
+	// calculate and return the magnitude of this vector
 	float GetMagnitude();
     
+    // calculate the square of the magnitude (useful for comparison of magnitudes without the cost of a sqrt() function used in GetMagnitude
+    float GetSqrMagnitude();
+    
 	//multiply this vector by a scalar
 	KRVector3 operator*(float num) const;
     
@@ -70,6 +86,8 @@ public:
     
 	//normalize this vector
 	void normalize();
+    
+    
 	
 	//calculate and return dot product
 	float dot(const KRVector3 &vec) const;
diff --git a/KREngine/KREngine/Classes/KRWorld.cpp b/KREngine/KREngine/Classes/KRWorld.cpp
new file mode 100644
index 0000000..ed70712
--- /dev/null
+++ b/KREngine/KREngine/Classes/KRWorld.cpp
@@ -0,0 +1,29 @@
+//
+//  KRWorld.cpp
+//  KREngine
+//
+//  Created by Kearwood Gilbert on 12-05-11.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#include <iostream>
+
+#include "KRWorld.h"
+#include "KRDataBlock.h"
+
+
+KRWorld::KRWorld() {
+    
+}
+KRWorld::~KRWorld() {
+    
+}
+
+void KRWorld::Load(void *data, int data_size) {
+    
+}
+
+KRDataBlock *KRWorld::Save() {
+    KRDataBlock *block = new KRDataBlock();
+    return block;
+}
diff --git a/KREngine/KREngine/Classes/KRWorld.h b/KREngine/KREngine/Classes/KRWorld.h
new file mode 100644
index 0000000..29df861
--- /dev/null
+++ b/KREngine/KREngine/Classes/KRWorld.h
@@ -0,0 +1,24 @@
+//
+//  KRWorld.h
+//  KREngine
+//
+//  Created by Kearwood Gilbert on 12-05-11.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#ifndef KREngine_KRWorld_h
+#define KREngine_KRWorld_h
+
+class KRDataBlock;
+
+class KRWorld {
+public:
+    KRWorld();
+    ~KRWorld();
+    
+    void Load(void *data, int data_size);
+    KRDataBlock *Save();
+private:
+};
+
+#endif
diff --git a/KREngine/KREngine/Shaders/light_point.vsh b/KREngine/KREngine/Shaders/light_point.vsh
index 84ef213..14bf865 100644
--- a/KREngine/KREngine/Shaders/light_point.vsh
+++ b/KREngine/KREngine/Shaders/light_point.vsh
@@ -31,5 +31,5 @@ uniform highp mat4 mvp_matrix; // mvp_matrix is the result of multiplying the mo
 void main()
 {
 	gl_Position = mvp_matrix * vertex_position;
-    gl_Position.z = max(gl_Position.z / gl_Position.w, 0.0) * gl_Position.w;
+    gl_Position.z = max(gl_Position.z / gl_Position.w, 0.00) * gl_Position.w;
 }
\ No newline at end of file
diff --git a/KRWorldBuilder/KRWorldBuilder.xcodeproj/project.pbxproj b/KRWorldBuilder/KRWorldBuilder.xcodeproj/project.pbxproj
index 0161475..aed1c28 100644
--- a/KRWorldBuilder/KRWorldBuilder.xcodeproj/project.pbxproj
+++ b/KRWorldBuilder/KRWorldBuilder.xcodeproj/project.pbxproj
@@ -7,16 +7,21 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		E440D976155E46DB00C4887B /* KRWBFileSystemItem.m in Sources */ = {isa = PBXBuildFile; fileRef = E440D975155E46DB00C4887B /* KRWBFileSystemItem.m */; };
+		E46F4A07155DF5E500CCF8B8 /* krengine_osx.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E46F4A06155DF5E500CCF8B8 /* krengine_osx.framework */; };
 		E474D77514E5BBF70017DCEC /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E474D77414E5BBF70017DCEC /* Cocoa.framework */; };
 		E474D77F14E5BBF70017DCEC /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = E474D77D14E5BBF70017DCEC /* InfoPlist.strings */; };
 		E474D78114E5BBF70017DCEC /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = E474D78014E5BBF70017DCEC /* main.m */; };
 		E474D78514E5BBF70017DCEC /* Credits.rtf in Resources */ = {isa = PBXBuildFile; fileRef = E474D78314E5BBF70017DCEC /* Credits.rtf */; };
-		E474D78814E5BBF70017DCEC /* KRWBDocument.m in Sources */ = {isa = PBXBuildFile; fileRef = E474D78714E5BBF70017DCEC /* KRWBDocument.m */; };
+		E474D78814E5BBF70017DCEC /* KRWBDocument.mm in Sources */ = {isa = PBXBuildFile; fileRef = E474D78714E5BBF70017DCEC /* KRWBDocument.mm */; };
 		E474D78B14E5BBF70017DCEC /* KRWBDocument.xib in Resources */ = {isa = PBXBuildFile; fileRef = E474D78914E5BBF70017DCEC /* KRWBDocument.xib */; };
 		E474D78E14E5BBF80017DCEC /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = E474D78C14E5BBF80017DCEC /* MainMenu.xib */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		E440D974155E46DB00C4887B /* KRWBFileSystemItem.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = KRWBFileSystemItem.h; sourceTree = "<group>"; };
+		E440D975155E46DB00C4887B /* KRWBFileSystemItem.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = KRWBFileSystemItem.m; sourceTree = "<group>"; };
+		E46F4A06155DF5E500CCF8B8 /* krengine_osx.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = krengine_osx.framework; path = ../KREngine/build/Release/krengine_osx.framework; sourceTree = "<group>"; };
 		E474D77014E5BBF70017DCEC /* KRWorldBuilder.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = KRWorldBuilder.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		E474D77414E5BBF70017DCEC /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = System/Library/Frameworks/Cocoa.framework; sourceTree = SDKROOT; };
 		E474D77714E5BBF70017DCEC /* AppKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AppKit.framework; path = System/Library/Frameworks/AppKit.framework; sourceTree = SDKROOT; };
@@ -28,7 +33,7 @@
 		E474D78214E5BBF70017DCEC /* KRWorldBuilder-Prefix.pch */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "KRWorldBuilder-Prefix.pch"; sourceTree = "<group>"; };
 		E474D78414E5BBF70017DCEC /* en */ = {isa = PBXFileReference; lastKnownFileType = text.rtf; name = en; path = en.lproj/Credits.rtf; sourceTree = "<group>"; };
 		E474D78614E5BBF70017DCEC /* KRWBDocument.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = KRWBDocument.h; sourceTree = "<group>"; };
-		E474D78714E5BBF70017DCEC /* KRWBDocument.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = KRWBDocument.m; sourceTree = "<group>"; };
+		E474D78714E5BBF70017DCEC /* KRWBDocument.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = KRWBDocument.mm; sourceTree = "<group>"; };
 		E474D78A14E5BBF70017DCEC /* en */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = en; path = en.lproj/KRWBDocument.xib; sourceTree = "<group>"; };
 		E474D78D14E5BBF80017DCEC /* en */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = en; path = en.lproj/MainMenu.xib; sourceTree = "<group>"; };
 /* End PBXFileReference section */
@@ -38,6 +43,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				E46F4A07155DF5E500CCF8B8 /* krengine_osx.framework in Frameworks */,
 				E474D77514E5BBF70017DCEC /* Cocoa.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -65,6 +71,7 @@
 		E474D77314E5BBF70017DCEC /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				E46F4A06155DF5E500CCF8B8 /* krengine_osx.framework */,
 				E474D77414E5BBF70017DCEC /* Cocoa.framework */,
 				E474D77614E5BBF70017DCEC /* Other Frameworks */,
 			);
@@ -85,8 +92,10 @@
 			isa = PBXGroup;
 			children = (
 				E474D78614E5BBF70017DCEC /* KRWBDocument.h */,
-				E474D78714E5BBF70017DCEC /* KRWBDocument.m */,
+				E474D78714E5BBF70017DCEC /* KRWBDocument.mm */,
 				E474D78914E5BBF70017DCEC /* KRWBDocument.xib */,
+				E440D974155E46DB00C4887B /* KRWBFileSystemItem.h */,
+				E440D975155E46DB00C4887B /* KRWBFileSystemItem.m */,
 				E474D78C14E5BBF80017DCEC /* MainMenu.xib */,
 				E474D77B14E5BBF70017DCEC /* Supporting Files */,
 			);
@@ -171,7 +180,8 @@
 			buildActionMask = 2147483647;
 			files = (
 				E474D78114E5BBF70017DCEC /* main.m in Sources */,
-				E474D78814E5BBF70017DCEC /* KRWBDocument.m in Sources */,
+				E474D78814E5BBF70017DCEC /* KRWBDocument.mm in Sources */,
+				E440D976155E46DB00C4887B /* KRWBFileSystemItem.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -301,6 +311,7 @@
 				E474D79314E5BBF80017DCEC /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};
diff --git a/KRWorldBuilder/KRWorldBuilder/KRWBDocument.h b/KRWorldBuilder/KRWorldBuilder/KRWBDocument.h
index e59c2a2..f15f625 100644
--- a/KRWorldBuilder/KRWorldBuilder/KRWBDocument.h
+++ b/KRWorldBuilder/KRWorldBuilder/KRWBDocument.h
@@ -8,6 +8,11 @@
 
 #import <Cocoa/Cocoa.h>
 
-@interface KRWBDocument : NSDocument
+class KRWorld;
+
+@interface KRWBDocument : NSDocument <NSOutlineViewDelegate, NSOutlineViewDataSource>
+
+@property (nonatomic, readonly) KRWorld *world;
+@property (nonatomic, retain) IBOutlet NSOutlineView *outlineView;
 
 @end
diff --git a/KRWorldBuilder/KRWorldBuilder/KRWBDocument.m b/KRWorldBuilder/KRWorldBuilder/KRWBDocument.mm
similarity index 60%
rename from KRWorldBuilder/KRWorldBuilder/KRWBDocument.m
rename to KRWorldBuilder/KRWorldBuilder/KRWBDocument.mm
index 6434c61..a294705 100644
--- a/KRWorldBuilder/KRWorldBuilder/KRWBDocument.m
+++ b/KRWorldBuilder/KRWorldBuilder/KRWBDocument.mm
@@ -8,18 +8,48 @@
 
 #import "KRWBDocument.h"
 
+#import <KREngine_osx/KRVector2.h>
+#import <KREngine_osx/KRVector3.h>
+#import <KREngine_osx/KRMesh.h>
+#import <KREngine_osx/KRWorld.h>
+#import "KRWBFileSystemItem.h"
+
+@interface KRWBDocument() {
+    KRWorld *_world;
+    NSOutlineView *_outlineView;
+}
+
+@end
+
 @implementation KRWBDocument
 
+@synthesize outlineView = _outlineView;
+
+- (KRWorld *)world
+{
+    return _world;
+}
+
 - (id)init
 {
+    _world = NULL;
     self = [super init];
     if (self) {
         // Add your subclass-specific initialization here.
         // If an error occurs here, return nil.
+        _world = new KRWorld();
     }
     return self;
 }
 
+- (void)dealloc
+{
+    if(_world) {
+        delete _world;
+        _world = NULL;
+    }
+}
+
 - (NSString *)windowNibName
 {
     // Override returning the nib file name of the document
@@ -30,6 +60,8 @@
 - (void)windowControllerDidLoadNib:(NSWindowController *)aController
 {
     [super windowControllerDidLoadNib:aController];
+
+    //[[self.windowControllers objectAtIndex:0] setBackgroundColor: [NSColor blackColor]];
     // Add any code here that needs to be executed once the windowController has loaded the document's window.
 }
 
@@ -51,8 +83,11 @@
     You can also choose to override -readFromFileWrapper:ofType:error: or -readFromURL:ofType:error: instead.
     If you override either of these, you should also override -isEntireFileLoaded to return NO if the contents are lazily loaded.
     */
+    /*
     NSException *exception = [NSException exceptionWithName:@"UnimplementedMethod" reason:[NSString stringWithFormat:@"%@ is unimplemented", NSStringFromSelector(_cmd)] userInfo:nil];
     @throw exception;
+     */
+    
     return YES;
 }
 
@@ -61,4 +96,34 @@
     return YES;
 }
 
+
+- (NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item {
+    if(item == nil) {
+        return [[KRWBFileSystemItem rootItem] numberOfChildren];
+    } else {
+        return [item numberOfChildren];
+    }
+    //return (item == nil) ? 1 : [item numberOfChildren];
+}
+
+
+- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item {
+    return (item == nil) ? YES : ([item numberOfChildren] != -1);
+}
+
+
+- (id)outlineView:(NSOutlineView *)outlineView child:(NSInteger)index ofItem:(id)item {
+    if(item == nil) {
+        return [[KRWBFileSystemItem rootItem] childAtIndex:index];
+    } else {
+        return [(KRWBFileSystemItem *)item childAtIndex:index];
+    }
+    //return (item == nil) ? [KRWBFileSystemItem rootItem] : [(KRWBFileSystemItem *)item childAtIndex:index];
+}
+
+
+- (id)outlineView:(NSOutlineView *)outlineView objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item {
+    return (item == nil) ? @"/" : [item relativePath];
+}
+
 @end
diff --git a/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.h b/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.h
new file mode 100644
index 0000000..570df4d
--- /dev/null
+++ b/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.h
@@ -0,0 +1,25 @@
+//
+//  KRWBFileSystemItem.h
+//  KRWorldBuilder
+//
+//  Created by Kearwood Gilbert on 12-05-12.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface KRWBFileSystemItem : NSObject
+{
+    NSURL *fullPath;
+    KRWBFileSystemItem *parent;
+    NSMutableArray *children;
+}
+
++ (KRWBFileSystemItem *)rootItem;
+- (NSInteger)numberOfChildren;// Returns -1 for leaf nodes
+- (KRWBFileSystemItem *)childAtIndex:(NSUInteger)n; // Invalid to call on leaf nodes
+- (NSURL *)fullPath;
+- (NSString *)relativePath;
+
+@end
+
diff --git a/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.m b/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.m
new file mode 100644
index 0000000..50ae220
--- /dev/null
+++ b/KRWorldBuilder/KRWorldBuilder/KRWBFileSystemItem.m
@@ -0,0 +1,109 @@
+//
+//  KRWBFileSystemItem.m
+//  KRWorldBuilder
+//
+//  Created by Kearwood Gilbert on 12-05-12.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#import "KRWBFileSystemItem.h"
+
+
+@implementation KRWBFileSystemItem
+
+static KRWBFileSystemItem *rootItem = nil;
+static NSMutableArray *leafNode = nil;
+
++ (void)initialize {
+    if (self == [KRWBFileSystemItem class]) {
+        leafNode = [[NSMutableArray alloc] init];
+    }
+}
+
+- (id)initWithPath:(NSURL *)url parent:(KRWBFileSystemItem *)parentItem {
+    self = [super init];
+    if (self) {
+        fullPath = url;
+        parent = parentItem;
+    }
+    return self;
+}
+
+
++ (KRWBFileSystemItem *)rootItem {
+    if (rootItem == nil) {
+        rootItem = [[KRWBFileSystemItem alloc] initWithPath:[NSURL URLWithString:@"file://localhost/"] parent:nil];
+    }
+    return rootItem;
+}
+
+
+// Creates, caches, and returns the array of children
+// Loads children incrementally
+- (NSArray *)children {
+    
+    if (children == nil) {
+        NSFileManager *fileManager = [NSFileManager defaultManager];
+        NSError *error;
+        
+        BOOL valid = [fullPath checkResourceIsReachableAndReturnError:NULL];
+        
+        
+        NSNumber *isDirectory = nil;
+        if (! [fullPath getResourceValue:&isDirectory forKey:NSURLIsDirectoryKey error:&error]) {
+            // handle error
+        }
+        
+        BOOL isDir = [isDirectory boolValue];
+        if (valid && isDir) {
+            NSArray *keys = [NSArray arrayWithObject:NSURLIsDirectoryKey];
+            
+            NSArray *child_urls = [fileManager contentsOfDirectoryAtURL:fullPath includingPropertiesForKeys:keys options: NSDirectoryEnumerationSkipsHiddenFiles error:&error];
+            /*
+            NSDirectoryEnumerator *enumerator = [fileManager
+                 enumeratorAtURL:fullPath
+                 includingPropertiesForKeys:keys
+                 options:0
+                 errorHandler:^(NSURL *url, NSError *error) {
+                     // Handle the error.
+                     // Return YES if the enumeration should continue after the error.
+                     return YES;
+            }];
+             */
+            
+            children = [[NSMutableArray alloc] init];
+            
+            for (NSURL *url in child_urls) {
+                KRWBFileSystemItem *newChild = [[KRWBFileSystemItem alloc]
+                                                initWithPath:url parent:self];     
+                [children addObject:newChild];
+            }
+        } else {
+            children = leafNode;
+        }
+    }
+    return children;
+}
+
+
+- (NSString *)relativePath {
+    return [[fullPath lastPathComponent] copy];
+}
+
+
+- (KRWBFileSystemItem *)childAtIndex:(NSUInteger)n {
+    return [[self children] objectAtIndex:n];
+}
+
+
+- (NSInteger)numberOfChildren {
+    NSArray *tmp = [self children];
+    return (tmp == leafNode) ? (-1) : [tmp count];
+}
+
+
+- (void)dealloc {
+
+}
+
+@end
\ No newline at end of file
diff --git a/KRWorldBuilder/KRWorldBuilder/KRWorldBuilder-Info.plist b/KRWorldBuilder/KRWorldBuilder/KRWorldBuilder-Info.plist
index a98c886..49b1d54 100644
--- a/KRWorldBuilder/KRWorldBuilder/KRWorldBuilder-Info.plist
+++ b/KRWorldBuilder/KRWorldBuilder/KRWorldBuilder-Info.plist
@@ -14,7 +14,7 @@
 			<key>CFBundleTypeIconFile</key>
 			<string></string>
 			<key>CFBundleTypeName</key>
-			<string>DocumentType</string>
+			<string>KREngine World</string>
 			<key>CFBundleTypeOSTypes</key>
 			<array>
 				<string>????</string>
diff --git a/KRWorldBuilder/KRWorldBuilder/en.lproj/KRWBDocument.xib b/KRWorldBuilder/KRWorldBuilder/en.lproj/KRWBDocument.xib
index a3d3a27..55626da 100644
--- a/KRWorldBuilder/KRWorldBuilder/en.lproj/KRWBDocument.xib
+++ b/KRWorldBuilder/KRWorldBuilder/en.lproj/KRWBDocument.xib
@@ -3,12 +3,12 @@
 	<data>
 		<int key="IBDocument.SystemTarget">1070</int>
 		<string key="IBDocument.SystemVersion">11D50b</string>
-		<string key="IBDocument.InterfaceBuilderVersion">1938</string>
+		<string key="IBDocument.InterfaceBuilderVersion">2182</string>
 		<string key="IBDocument.AppKitVersion">1138.32</string>
 		<string key="IBDocument.HIToolboxVersion">568.00</string>
 		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
-			<string key="NS.object.0">1938</string>
+			<string key="NS.object.0">2182</string>
 		</object>
 		<array key="IBDocument.IntegratedClassDependencies">
 			<string>NSTableColumn</string>
@@ -16,7 +16,6 @@
 			<string>NSToolbarFlexibleSpaceItem</string>
 			<string>NSSplitView</string>
 			<string>NSScroller</string>
-			<string>NSTableHeaderView</string>
 			<string>NSScrollView</string>
 			<string>NSTextFieldCell</string>
 			<string>NSToolbarSpaceItem</string>
@@ -47,7 +46,7 @@
 			<object class="NSWindowTemplate" id="275939982">
 				<int key="NSWindowStyleMask">15</int>
 				<int key="NSWindowBacking">2</int>
-				<string key="NSWindowRect">{{133, 235}, {507, 427}}</string>
+				<string key="NSWindowRect">{{133, 235}, {857, 513}}</string>
 				<int key="NSWTFlags">1886912512</int>
 				<string key="NSWindowTitle">Window</string>
 				<string key="NSWindowClass">NSWindow</string>
@@ -61,7 +60,7 @@
 					<bool key="NSToolbarAllowsUserCustomization">YES</bool>
 					<bool key="NSToolbarAutosavesConfiguration">NO</bool>
 					<int key="NSToolbarDisplayMode">1</int>
-					<int key="NSToolbarSizeMode">1</int>
+					<int key="NSToolbarSizeMode">2</int>
 					<dictionary class="NSMutableDictionary" key="NSToolbarIBIdentifiedItems">
 						<object class="NSToolbarItem" key="NSToolbarCustomizeToolbarItem" id="323347159">
 							<string key="NSToolbarItemIdentifier">NSToolbarCustomizeToolbarItem</string>
@@ -211,7 +210,7 @@
 							</object>
 						</object>
 					</dictionary>
-					<array class="NSMutableArray" key="NSToolbarIBAllowedItems">
+					<array key="NSToolbarIBAllowedItems">
 						<reference ref="96577673"/>
 						<reference ref="678544536"/>
 						<reference ref="997438218"/>
@@ -219,7 +218,7 @@
 						<reference ref="996908587"/>
 						<reference ref="323347159"/>
 					</array>
-					<array class="NSMutableArray" key="NSToolbarIBDefaultItems">
+					<array key="NSToolbarIBDefaultItems">
 						<reference ref="96577673"/>
 						<reference ref="678544536"/>
 						<reference ref="996908587"/>
@@ -250,22 +249,13 @@
 												<object class="NSOutlineView" id="678629963">
 													<reference key="NSNextResponder" ref="30156716"/>
 													<int key="NSvFlags">256</int>
-													<string key="NSFrameSize">{162, 410}</string>
+													<string key="NSFrameSize">{209, 513}</string>
 													<reference key="NSSuperview" ref="30156716"/>
 													<reference key="NSWindow"/>
-													<reference key="NSNextKeyView" ref="642699508"/>
+													<reference key="NSNextKeyView" ref="952976906"/>
+													<int key="NSViewLayerContentsRedrawPolicy">2</int>
 													<string key="NSReuseIdentifierKey">_NS:1703</string>
 													<bool key="NSEnabled">YES</bool>
-													<object class="NSTableHeaderView" key="NSHeaderView" id="568844948">
-														<reference key="NSNextResponder" ref="451277198"/>
-														<int key="NSvFlags">256</int>
-														<string key="NSFrameSize">{162, 17}</string>
-														<reference key="NSSuperview" ref="451277198"/>
-														<reference key="NSWindow"/>
-														<reference key="NSNextKeyView" ref="30156716"/>
-														<string key="NSReuseIdentifierKey">_NS:1705</string>
-														<reference key="NSTableView" ref="678629963"/>
-													</object>
 													<object class="_NSCornerView" key="NSCornerView">
 														<nil key="NSNextResponder"/>
 														<int key="NSvFlags">-2147483392</int>
@@ -274,23 +264,23 @@
 													</object>
 													<array class="NSMutableArray" key="NSTableColumns">
 														<object class="NSTableColumn" id="763595350">
-															<double key="NSWidth">101</double>
+															<double key="NSWidth">206</double>
 															<double key="NSMinWidth">16</double>
 															<double key="NSMaxWidth">1000</double>
 															<object class="NSTableHeaderCell" key="NSHeaderCell">
 																<int key="NSCellFlags">75628096</int>
 																<int key="NSCellFlags2">2048</int>
 																<string key="NSContents"/>
-																<object class="NSFont" key="NSSupport" id="26">
+																<object class="NSFont" key="NSSupport">
 																	<string key="NSName">LucidaGrande</string>
 																	<double key="NSSize">11</double>
 																	<int key="NSfFlags">3100</int>
 																</object>
-																<object class="NSColor" key="NSBackgroundColor" id="987013412">
+																<object class="NSColor" key="NSBackgroundColor">
 																	<int key="NSColorSpace">3</int>
 																	<bytes key="NSWhite">MC4zMzMzMzI5ODU2AA</bytes>
 																</object>
-																<object class="NSColor" key="NSTextColor" id="786729093">
+																<object class="NSColor" key="NSTextColor">
 																	<int key="NSColorSpace">6</int>
 																	<string key="NSCatalogName">System</string>
 																	<string key="NSColorName">headerTextColor</string>
@@ -304,7 +294,7 @@
 																<int key="NSCellFlags">337772096</int>
 																<int key="NSCellFlags2">2048</int>
 																<string key="NSContents">Text Cell</string>
-																<object class="NSFont" key="NSSupport" id="661470994">
+																<object class="NSFont" key="NSSupport">
 																	<string key="NSName">LucidaGrande</string>
 																	<double key="NSSize">13</double>
 																	<int key="NSfFlags">1044</int>
@@ -319,7 +309,7 @@
 																		<bytes key="NSWhite">MC42NjY2NjY2NjY3AA</bytes>
 																	</object>
 																</object>
-																<object class="NSColor" key="NSTextColor" id="554098902">
+																<object class="NSColor" key="NSTextColor">
 																	<int key="NSColorSpace">6</int>
 																	<string key="NSCatalogName">System</string>
 																	<string key="NSColorName">controlTextColor</string>
@@ -331,32 +321,6 @@
 															<bool key="NSIsEditable">YES</bool>
 															<reference key="NSTableView" ref="678629963"/>
 														</object>
-														<object class="NSTableColumn" id="245451220">
-															<double key="NSWidth">55</double>
-															<double key="NSMinWidth">40</double>
-															<double key="NSMaxWidth">1000</double>
-															<object class="NSTableHeaderCell" key="NSHeaderCell">
-																<int key="NSCellFlags">75628096</int>
-																<int key="NSCellFlags2">2048</int>
-																<string key="NSContents"/>
-																<reference key="NSSupport" ref="26"/>
-																<reference key="NSBackgroundColor" ref="987013412"/>
-																<reference key="NSTextColor" ref="786729093"/>
-															</object>
-															<object class="NSTextFieldCell" key="NSDataCell" id="88949946">
-																<int key="NSCellFlags">337772096</int>
-																<int key="NSCellFlags2">2048</int>
-																<string key="NSContents">Text Cell</string>
-																<reference key="NSSupport" ref="661470994"/>
-																<reference key="NSControlView" ref="678629963"/>
-																<reference key="NSBackgroundColor" ref="45682733"/>
-																<reference key="NSTextColor" ref="554098902"/>
-															</object>
-															<int key="NSResizingMask">3</int>
-															<bool key="NSIsResizeable">YES</bool>
-															<bool key="NSIsEditable">YES</bool>
-															<reference key="NSTableView" ref="678629963"/>
-														</object>
 													</array>
 													<double key="NSIntercellSpacingWidth">3</double>
 													<double key="NSIntercellSpacingHeight">2</double>
@@ -385,14 +349,15 @@
 													<int key="NSTableViewGroupRowStyle">1</int>
 												</object>
 											</array>
-											<string key="NSFrame">{{0, 17}, {162, 410}}</string>
+											<string key="NSFrameSize">{209, 513}</string>
 											<reference key="NSSuperview" ref="581171615"/>
 											<reference key="NSWindow"/>
 											<reference key="NSNextKeyView" ref="678629963"/>
+											<int key="NSViewLayerContentsRedrawPolicy">2</int>
 											<string key="NSReuseIdentifierKey">_NS:1701</string>
 											<reference key="NSDocView" ref="678629963"/>
 											<reference key="NSBGColor" ref="45682733"/>
-											<int key="NScvFlags">4</int>
+											<int key="NScvFlags">6</int>
 										</object>
 										<object class="NSScroller" id="952976906">
 											<reference key="NSNextResponder" ref="581171615"/>
@@ -400,58 +365,42 @@
 											<string key="NSFrame">{{224, 17}, {15, 102}}</string>
 											<reference key="NSSuperview" ref="581171615"/>
 											<reference key="NSWindow"/>
-											<reference key="NSNextKeyView" ref="949597853"/>
+											<reference key="NSNextKeyView" ref="642699508"/>
 											<string key="NSReuseIdentifierKey">_NS:1726</string>
 											<reference key="NSTarget" ref="581171615"/>
 											<string key="NSAction">_doScroller:</string>
-											<double key="NSCurValue">37</double>
-											<double key="NSPercent">0.13909779489040375</double>
+											<double key="NSPercent">0.99805447470817121</double>
 										</object>
 										<object class="NSScroller" id="642699508">
 											<reference key="NSNextResponder" ref="581171615"/>
 											<int key="NSvFlags">-2147483392</int>
-											<string key="NSFrame">{{1, 56.862202525138855}, {100.86830902099609, 15}}</string>
+											<string key="NSFrame">{{0, 498}, {209, 15}}</string>
 											<reference key="NSSuperview" ref="581171615"/>
 											<reference key="NSWindow"/>
-											<reference key="NSNextKeyView" ref="952976906"/>
+											<reference key="NSNextKeyView" ref="949597853"/>
 											<string key="NSReuseIdentifierKey">_NS:1728</string>
 											<int key="NSsFlags">1</int>
 											<reference key="NSTarget" ref="581171615"/>
 											<string key="NSAction">_doScroller:</string>
-											<double key="NSPercent">0.68707482993197277</double>
-										</object>
-										<object class="NSClipView" id="451277198">
-											<reference key="NSNextResponder" ref="581171615"/>
-											<int key="NSvFlags">2304</int>
-											<array class="NSMutableArray" key="NSSubviews">
-												<reference ref="568844948"/>
-											</array>
-											<string key="NSFrameSize">{162, 17}</string>
-											<reference key="NSSuperview" ref="581171615"/>
-											<reference key="NSWindow"/>
-											<reference key="NSNextKeyView" ref="568844948"/>
-											<string key="NSReuseIdentifierKey">_NS:1706</string>
-											<reference key="NSDocView" ref="568844948"/>
-											<reference key="NSBGColor" ref="45682733"/>
-											<int key="NScvFlags">4</int>
+											<double key="NSPercent">0.99523809523809526</double>
 										</object>
 									</array>
-									<string key="NSFrameSize">{162, 427}</string>
+									<string key="NSFrameSize">{209, 513}</string>
 									<reference key="NSSuperview" ref="742882765"/>
 									<reference key="NSWindow"/>
-									<reference key="NSNextKeyView" ref="451277198"/>
+									<reference key="NSNextKeyView" ref="30156716"/>
+									<int key="NSViewLayerContentsRedrawPolicy">2</int>
 									<string key="NSReuseIdentifierKey">_NS:1699</string>
 									<int key="NSsFlags">264752</int>
 									<reference key="NSVScroller" ref="952976906"/>
 									<reference key="NSHScroller" ref="642699508"/>
 									<reference key="NSContentView" ref="30156716"/>
-									<reference key="NSHeaderClipView" ref="451277198"/>
 									<bytes key="NSScrollAmts">QSAAAEEgAABBmAAAQZgAAA</bytes>
 								</object>
 								<object class="NSCustomView" id="949597853">
 									<reference key="NSNextResponder" ref="742882765"/>
 									<int key="NSvFlags">4352</int>
-									<string key="NSFrame">{{163, 0}, {144, 427}}</string>
+									<string key="NSFrame">{{210, 0}, {428, 513}}</string>
 									<reference key="NSSuperview" ref="742882765"/>
 									<reference key="NSWindow"/>
 									<reference key="NSNextKeyView" ref="41920732"/>
@@ -470,7 +419,7 @@
 												<object class="NSCollectionView" id="178212487">
 													<reference key="NSNextResponder" ref="237514163"/>
 													<int key="NSvFlags">274</int>
-													<string key="NSFrameSize">{199, 427}</string>
+													<string key="NSFrameSize">{218, 513}</string>
 													<reference key="NSSuperview" ref="237514163"/>
 													<reference key="NSWindow"/>
 													<reference key="NSNextKeyView" ref="283770399"/>
@@ -487,7 +436,7 @@
 													<int key="NSDraggingSourceMaskForNonLocal">0</int>
 												</object>
 											</array>
-											<string key="NSFrameSize">{199, 427}</string>
+											<string key="NSFrameSize">{218, 513}</string>
 											<reference key="NSSuperview" ref="41920732"/>
 											<reference key="NSWindow"/>
 											<reference key="NSNextKeyView" ref="178212487"/>
@@ -529,7 +478,7 @@
 											<double key="NSPercent">0.63157892227172852</double>
 										</object>
 									</array>
-									<string key="NSFrame">{{308, 0}, {199, 427}}</string>
+									<string key="NSFrame">{{639, 0}, {218, 513}}</string>
 									<reference key="NSSuperview" ref="742882765"/>
 									<reference key="NSWindow"/>
 									<reference key="NSNextKeyView" ref="237514163"/>
@@ -541,7 +490,7 @@
 									<reference key="NSContentView" ref="237514163"/>
 								</object>
 							</array>
-							<string key="NSFrameSize">{507, 427}</string>
+							<string key="NSFrameSize">{857, 513}</string>
 							<reference key="NSSuperview" ref="568628114"/>
 							<reference key="NSWindow"/>
 							<reference key="NSNextKeyView" ref="581171615"/>
@@ -551,25 +500,23 @@
 							<int key="NSDividerStyle">2</int>
 						</object>
 					</array>
-					<string key="NSFrameSize">{507, 427}</string>
+					<string key="NSFrameSize">{857, 513}</string>
 					<reference key="NSSuperview"/>
 					<reference key="NSWindow"/>
 					<reference key="NSNextKeyView" ref="742882765"/>
+					<bool key="NSViewIsLayerTreeHost">YES</bool>
+					<int key="NSViewLayerContentsRedrawPolicy">2</int>
 				</object>
 				<string key="NSScreenRect">{{0, 0}, {1920, 1178}}</string>
-				<string key="NSMinSize">{94, 164}</string>
+				<string key="NSMinSize">{94, 155}</string>
 				<string key="NSMaxSize">{10000000000000, 10000000000000}</string>
+				<int key="NSWindowCollectionBehavior">128</int>
 				<bool key="NSWindowIsRestorable">YES</bool>
 			</object>
 			<object class="NSCustomObject" id="796877042">
 				<string key="NSClassName">NSApplication</string>
 			</object>
 			<object class="NSCollectionViewItem" id="375262593"/>
-			<object class="NSView" id="322286456">
-				<nil key="NSNextResponder"/>
-				<int key="NSvFlags">256</int>
-				<string key="NSFrameSize">{100, 100}</string>
-			</object>
 		</array>
 		<object class="IBObjectContainer" key="IBDocument.Objects">
 			<array class="NSMutableArray" key="connectionRecords">
@@ -581,6 +528,14 @@
 					</object>
 					<int key="connectionID">18</int>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">outlineView</string>
+						<reference key="source" ref="512844837"/>
+						<reference key="destination" ref="678629963"/>
+					</object>
+					<int key="connectionID">100069</int>
+				</object>
 				<object class="IBConnectionRecord">
 					<object class="IBOutletConnection" key="connection">
 						<string key="label">delegate</string>
@@ -599,11 +554,19 @@
 				</object>
 				<object class="IBConnectionRecord">
 					<object class="IBOutletConnection" key="connection">
-						<string key="label">view</string>
-						<reference key="source" ref="375262593"/>
-						<reference key="destination" ref="322286456"/>
+						<string key="label">dataSource</string>
+						<reference key="source" ref="678629963"/>
+						<reference key="destination" ref="512844837"/>
 					</object>
-					<int key="connectionID">100053</int>
+					<int key="connectionID">100067</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">delegate</string>
+						<reference key="source" ref="678629963"/>
+						<reference key="destination" ref="512844837"/>
+					</object>
+					<int key="connectionID">100068</int>
 				</object>
 			</array>
 			<object class="IBMutableOrderedSet" key="objectRecords">
@@ -739,18 +702,12 @@
 						<reference key="object" ref="375262593"/>
 						<reference key="parent" ref="0"/>
 					</object>
-					<object class="IBObjectRecord">
-						<int key="objectID">100051</int>
-						<reference key="object" ref="322286456"/>
-						<reference key="parent" ref="0"/>
-					</object>
 					<object class="IBObjectRecord">
 						<int key="objectID">100054</int>
 						<reference key="object" ref="581171615"/>
 						<array class="NSMutableArray" key="children">
 							<reference ref="678629963"/>
 							<reference ref="642699508"/>
-							<reference ref="568844948"/>
 							<reference ref="952976906"/>
 						</array>
 						<reference key="parent" ref="742882765"/>
@@ -760,7 +717,6 @@
 						<reference key="object" ref="678629963"/>
 						<array class="NSMutableArray" key="children">
 							<reference ref="763595350"/>
-							<reference ref="245451220"/>
 						</array>
 						<reference key="parent" ref="581171615"/>
 					</object>
@@ -769,11 +725,6 @@
 						<reference key="object" ref="642699508"/>
 						<reference key="parent" ref="581171615"/>
 					</object>
-					<object class="IBObjectRecord">
-						<int key="objectID">100057</int>
-						<reference key="object" ref="568844948"/>
-						<reference key="parent" ref="581171615"/>
-					</object>
 					<object class="IBObjectRecord">
 						<int key="objectID">100058</int>
 						<reference key="object" ref="952976906"/>
@@ -787,19 +738,6 @@
 						</array>
 						<reference key="parent" ref="678629963"/>
 					</object>
-					<object class="IBObjectRecord">
-						<int key="objectID">100060</int>
-						<reference key="object" ref="245451220"/>
-						<array class="NSMutableArray" key="children">
-							<reference ref="88949946"/>
-						</array>
-						<reference key="parent" ref="678629963"/>
-					</object>
-					<object class="IBObjectRecord">
-						<int key="objectID">100061</int>
-						<reference key="object" ref="88949946"/>
-						<reference key="parent" ref="245451220"/>
-					</object>
 					<object class="IBObjectRecord">
 						<int key="objectID">100062</int>
 						<reference key="object" ref="322998401"/>
@@ -825,75 +763,66 @@
 				<string key="100048.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100049.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100050.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
-				<string key="100051.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100054.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100055.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100056.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
-				<string key="100057.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100058.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100059.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
-				<string key="100060.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
-				<string key="100061.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="100062.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="5.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="5.IBWindowTemplateEditedContentRect">{{133, 170}, {507, 413}}</string>
 				<string key="6.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<real value="0.0" key="6.IBViewIntegration.shadowBlurRadius"/>
+				<reference key="6.IBViewIntegration.shadowColor" ref="937766609"/>
+				<real value="0.0" key="6.IBViewIntegration.shadowOffsetHeight"/>
+				<real value="0.0" key="6.IBViewIntegration.shadowOffsetWidth"/>
 			</dictionary>
 			<dictionary class="NSMutableDictionary" key="unlocalizedProperties"/>
 			<nil key="activeLocalization"/>
 			<dictionary class="NSMutableDictionary" key="localizations"/>
 			<nil key="sourceID"/>
-			<int key="maxID">100062</int>
+			<int key="maxID">100078</int>
 		</object>
 		<object class="IBClassDescriber" key="IBDocument.Classes">
 			<array class="NSMutableArray" key="referencedPartialClassDescriptions">
 				<object class="IBPartialClassDescription">
 					<string key="className">KRWBDocument</string>
 					<string key="superclassName">NSDocument</string>
+					<object class="NSMutableDictionary" key="outlets">
+						<string key="NS.key.0">outlineView</string>
+						<string key="NS.object.0">NSOutlineView</string>
+					</object>
+					<object class="NSMutableDictionary" key="toOneOutletInfosByName">
+						<string key="NS.key.0">outlineView</string>
+						<object class="IBToOneOutletInfo" key="NS.object.0">
+							<string key="name">outlineView</string>
+							<string key="candidateClassName">NSOutlineView</string>
+						</object>
+					</object>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">
 						<string key="majorKey">IBProjectSource</string>
 						<string key="minorKey">./Classes/KRWBDocument.h</string>
 					</object>
 				</object>
 				<object class="IBPartialClassDescription">
-					<string key="className">NSDocument</string>
-					<dictionary class="NSMutableDictionary" key="actions">
-						<string key="printDocument:">id</string>
-						<string key="revertDocumentToSaved:">id</string>
-						<string key="runPageLayout:">id</string>
-						<string key="saveDocument:">id</string>
-						<string key="saveDocumentAs:">id</string>
-						<string key="saveDocumentTo:">id</string>
+					<string key="className">NSCollectionViewItem</string>
+					<dictionary class="NSMutableDictionary" key="outlets">
+						<string key="imageView">NSImageView</string>
+						<string key="textField">NSTextField</string>
 					</dictionary>
-					<dictionary class="NSMutableDictionary" key="actionInfosByName">
-						<object class="IBActionInfo" key="printDocument:">
-							<string key="name">printDocument:</string>
-							<string key="candidateClassName">id</string>
+					<dictionary class="NSMutableDictionary" key="toOneOutletInfosByName">
+						<object class="IBToOneOutletInfo" key="imageView">
+							<string key="name">imageView</string>
+							<string key="candidateClassName">NSImageView</string>
 						</object>
-						<object class="IBActionInfo" key="revertDocumentToSaved:">
-							<string key="name">revertDocumentToSaved:</string>
-							<string key="candidateClassName">id</string>
-						</object>
-						<object class="IBActionInfo" key="runPageLayout:">
-							<string key="name">runPageLayout:</string>
-							<string key="candidateClassName">id</string>
-						</object>
-						<object class="IBActionInfo" key="saveDocument:">
-							<string key="name">saveDocument:</string>
-							<string key="candidateClassName">id</string>
-						</object>
-						<object class="IBActionInfo" key="saveDocumentAs:">
-							<string key="name">saveDocumentAs:</string>
-							<string key="candidateClassName">id</string>
-						</object>
-						<object class="IBActionInfo" key="saveDocumentTo:">
-							<string key="name">saveDocumentTo:</string>
-							<string key="candidateClassName">id</string>
+						<object class="IBToOneOutletInfo" key="textField">
+							<string key="name">textField</string>
+							<string key="candidateClassName">NSTextField</string>
 						</object>
 					</dictionary>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">
 						<string key="majorKey">IBProjectSource</string>
-						<string key="minorKey">./Classes/NSDocument.h</string>
+						<string key="minorKey">./Classes/NSCollectionViewItem.h</string>
 					</object>
 				</object>
 			</array>