diff --git a/.idea/artifacts/texel_jar.xml b/.idea/artifacts/texel_jar.xml
index d5e4bff..b4583e2 100644
--- a/.idea/artifacts/texel_jar.xml
+++ b/.idea/artifacts/texel_jar.xml
@@ -3,7 +3,6 @@
     <output-path>$PROJECT_DIR$/out/artifacts/texel</output-path>
     <root id="archive" name="texel.jar">
       <element id="module-output" name="texel" />
-      <element id="module-output" name="core" />
       <element id="extracted-dir" path="$PROJECT_DIR$/texel/libs/lwjgl.jar" path-in-jar="/" />
       <element id="extracted-dir" path="$PROJECT_DIR$/texel/libs/lwjgl-egl.jar" path-in-jar="/" />
       <element id="extracted-dir" path="$PROJECT_DIR$/texel/libs/lwjgl-glfw.jar" path-in-jar="/" />
diff --git a/build.xml b/build.xml
index 5d26b9f..fa1fd45 100644
--- a/build.xml
+++ b/build.xml
@@ -213,28 +213,23 @@
   <path id="texel.module.production.classpath">
     <path refid="${module.jdk.classpath.texel}"/>
     <path refid="library.texel-libs.classpath"/>
-    <pathelement location="${core.output.dir}"/>
   </path>
   
   <path id="texel.runtime.production.module.classpath">
     <pathelement location="${texel.output.dir}"/>
     <path refid="library.texel-libs.classpath"/>
-    <path refid="core.runtime.production.module.classpath"/>
   </path>
   
   <path id="texel.module.classpath">
     <path refid="${module.jdk.classpath.texel}"/>
     <pathelement location="${texel.output.dir}"/>
     <path refid="library.texel-libs.classpath"/>
-    <pathelement location="${core.testoutput.dir}"/>
-    <pathelement location="${core.output.dir}"/>
   </path>
   
   <path id="texel.runtime.module.classpath">
     <pathelement location="${texel.testoutput.dir}"/>
     <pathelement location="${texel.output.dir}"/>
     <path refid="library.texel-libs.classpath"/>
-    <path refid="core.runtime.module.classpath"/>
   </path>
   
   
@@ -256,7 +251,7 @@
   
   <target name="compile.module.texel" depends="compile.module.texel.production,compile.module.texel.tests" description="Compile module texel"/>
   
-  <target name="compile.module.texel.production" depends="compile.module.core" description="Compile module texel; production classes">
+  <target name="compile.module.texel.production" description="Compile module texel; production classes">
     <mkdir dir="${texel.output.dir}"/>
     <javac destdir="${texel.output.dir}" debug="${compiler.debug}" nowarn="${compiler.generate.no.warnings}" memorymaximumsize="${compiler.max.memory}" fork="true" executable="${module.jdk.bin.texel}/javac">
       <compilerarg line="${compiler.args.texel}"/>
diff --git a/core/src/br/nullexcept/mux/app/ApplicationRuntime.java b/core/src/br/nullexcept/mux/app/ApplicationRuntime.java
index fa5b7ad..a916ca4 100644
--- a/core/src/br/nullexcept/mux/app/ApplicationRuntime.java
+++ b/core/src/br/nullexcept/mux/app/ApplicationRuntime.java
@@ -84,7 +84,7 @@ void start() {
     }
 
     void boot(Window window, Activity activity) {
-        window.destroy();
+        window.reset();
         activity.appRuntime = this;
         activity.mWindow = window;
         window.setWindowObserver(buildObserver(activity));
diff --git a/core/src/br/nullexcept/mux/graphics/Canvas.java b/core/src/br/nullexcept/mux/graphics/Canvas.java
index 35f1db1..0511c69 100644
--- a/core/src/br/nullexcept/mux/graphics/Canvas.java
+++ b/core/src/br/nullexcept/mux/graphics/Canvas.java
@@ -31,6 +31,12 @@ default void drawEllipse(Rect rect, Paint paint){
     default void drawRoundRect(Rect rect, int radius, Paint paint){
         drawRoundRect(rect.left, rect.top, rect.right, rect.bottom, radius, paint);
     }
+
+    /*
+        left ------------- right
+          |                  |
+         top ------------- bottom
+     */
     default void drawRoundRect(Rect rect, Rect radius, Paint paint){
         drawRoundRect(rect.left, rect.top, rect.right, rect.bottom, radius.left, radius.top, radius.right, radius.bottom, paint);
     }
diff --git a/core/src/br/nullexcept/mux/view/Window.java b/core/src/br/nullexcept/mux/view/Window.java
index 1706445..a08cf46 100644
--- a/core/src/br/nullexcept/mux/view/Window.java
+++ b/core/src/br/nullexcept/mux/view/Window.java
@@ -16,13 +16,14 @@ public abstract class Window {
     public abstract void setVisible(boolean visible);
     public abstract void setWindowObserver(WindowObserver observer);
     public abstract WindowObserver getWindowObserver();
+
+    public abstract void reset();
     public abstract void create();
     public abstract void destroy();
     public abstract void setIcon(Drawable icon);
 
     public abstract CharSequence getTitle();
     public abstract Size getSize();
-
     public interface WindowObserver {
         void onCreated();
         void onVisibilityChanged(boolean visible);
diff --git a/texel/src/br/nullexcept/mux/core/texel/GlfwWindow.java b/texel/src/br/nullexcept/mux/core/texel/GlfwWindow.java
index 2ff11a8..31f743d 100644
--- a/texel/src/br/nullexcept/mux/core/texel/GlfwWindow.java
+++ b/texel/src/br/nullexcept/mux/core/texel/GlfwWindow.java
@@ -239,6 +239,12 @@ public WindowObserver getWindowObserver() {
         return observer;
     }
 
+
+    @Override
+    public void reset() {
+        destroy();
+    }
+
     @Override
     public void create() {
         if(!destroyed){