diff --git a/src/main/java/edu/kit/formal/gui/controller/DebuggerMainWindowController.java b/src/main/java/edu/kit/formal/gui/controller/DebuggerMainWindowController.java
index bf39c91361e93d6ebe6b8f07e7bb9a039131653e..3ffde4866a301bdc7d6d3d3349fbb10d990ae334 100644
--- a/src/main/java/edu/kit/formal/gui/controller/DebuggerMainWindowController.java
+++ b/src/main/java/edu/kit/formal/gui/controller/DebuggerMainWindowController.java
@@ -15,7 +15,6 @@ import edu.kit.formal.interpreter.data.State;
 import edu.kit.formal.proofscriptparser.Facade;
 import edu.kit.formal.proofscriptparser.ast.ProofScript;
 import javafx.beans.Observable;
-import javafx.beans.binding.StringBinding;
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.beans.value.ObservableBooleanValue;
@@ -64,12 +63,12 @@ public class DebuggerMainWindowController implements Initializable {
      *      Code Area
      * **********************************************************************************************************/
 
+    //@FXML
+    //private ScriptArea scriptArea;
     @FXML
-    private ScriptArea scriptArea;
-    @FXML
-    private TabPane tabPane;
-    @FXML
-    private Tab startTab;
+    private ScriptTabsController tabPane;
+    //@FXML
+    //private Tab startTab;
     /***********************************************************************************************************
      *      MenuBar
      * **********************************************************************************************************/
@@ -180,7 +179,9 @@ public class DebuggerMainWindowController implements Initializable {
             javaSourceCode.insertText(0, writer.toString());
         });
 
-        scriptArea.getMarkedLines().addListener(new SetChangeListener<Integer>() {
+//        scriptArea.getMarkedLines().addListener(new SetChangeListener<Integer>() {
+        tabPane.getActiveScriptAreaTab().getScriptArea().getMarkedLines().addListener(new SetChangeListener<Integer>() {
+
             @Override
             public void onChanged(Change<? extends Integer> change) {
                 blocker.getBreakpoints().clear();
@@ -209,7 +210,8 @@ public class DebuggerMainWindowController implements Initializable {
 
         goalView.setCellFactory(GoalNodeListCell::new);
         CustomTabPaneSkin skin = new CustomTabPaneSkin(tabPane);
-        startTab.textProperty().bind(new StringBinding() {
+
+      /*  startTab.textProperty().bind(new StringBinding() {
             {
                 super.bind(model.scriptFileProperty());
             }
@@ -224,7 +226,8 @@ public class DebuggerMainWindowController implements Initializable {
                 }
             }
 
-        });
+        });*/
+
 
     }
 
@@ -243,7 +246,7 @@ public class DebuggerMainWindowController implements Initializable {
         int line = lm.getLine(scriptArea.getCaretPosition());
         int inLine = lm.getCharInLine(scriptArea.getCaretPosition());
 */
-        ib.ignoreLinesUntil(scriptArea.getCaretPosition());
+        ib.ignoreLinesUntil(tabPane.getActiveScriptAreaTab().getScriptArea().getCaretPosition());
 
 
         executeScript(ib, true);
@@ -260,7 +263,7 @@ public class DebuggerMainWindowController implements Initializable {
         blocker.deinstall();
         lblStatusMessage.setText("Parse ...");
         try {
-            List<ProofScript> scripts = Facade.getAST(scriptArea.getText());
+            List<ProofScript> scripts = Facade.getAST(tabPane.getActiveScriptAreaTab().getScriptArea().getText());
             lblStatusMessage.setText("Creating new Interpreter instance ...");
             ib.setScripts(scripts);
             ib.captureHistory();
@@ -305,7 +308,7 @@ public class DebuggerMainWindowController implements Initializable {
 
     private void saveScript(File scriptFile) {
         try {
-            FileUtils.write(scriptFile, scriptArea.getText(), Charset.defaultCharset());
+            FileUtils.write(scriptFile, tabPane.getActiveScriptAreaTab().getScriptArea().getText(), Charset.defaultCharset());
         } catch (IOException e) {
             showExceptionDialog("Could not save file", "blubb", "...fsfsfsf fsa", e);
         }
@@ -323,7 +326,8 @@ public class DebuggerMainWindowController implements Initializable {
         assert scriptFile != null;
         try {
             String code = FileUtils.readFileToString(scriptFile, Charset.defaultCharset());
-            openScript(code);
+            tabPane.createNewTab(scriptFile.getAbsolutePath());
+            openScript(code, tabPane.getActiveScriptAreaTab().getScriptArea());
             model.setScriptFile(scriptFile);
         } catch (IOException e) {
             showExceptionDialog("Exception occured", "",
@@ -331,10 +335,14 @@ public class DebuggerMainWindowController implements Initializable {
         }
     }
 
-    private void openScript(String code) {
+    private void openScript(String code, ScriptArea area) {
         model.setScriptFile(null);
-        scriptArea.clear();
-        scriptArea.setText(code);
+        if (area.textProperty().getValue() != "") {
+            System.out.println(area.textProperty().getValue());
+            area.deleteText(0, area.textProperty().getValue().length());
+        }
+        area.setText(code);
+
     }
 
     @FXML
diff --git a/src/main/java/edu/kit/formal/gui/controls/InspectionViewControl.java b/src/main/java/edu/kit/formal/gui/controls/InspectionViewControl.java
new file mode 100644
index 0000000000000000000000000000000000000000..99355289846e5f69eddff809c1aec60cd4b01230
--- /dev/null
+++ b/src/main/java/edu/kit/formal/gui/controls/InspectionViewControl.java
@@ -0,0 +1,31 @@
+package edu.kit.formal.gui.controls;
+
+import edu.kit.formal.gui.model.InspectionModel;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.Tab;
+
+import java.io.IOException;
+
+/**
+ * Right part of the splitpane that displays the different parts of a state
+ */
+public class InspectionViewControl extends Tab {
+    public final InspectionModel inspectionModel;
+
+    public InspectionViewControl(InspectionModel inspectionModel) {
+        super();
+        this.inspectionModel = inspectionModel;
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("InspectionView.fxml"));
+        loader.setRoot(this);
+        loader.setController(this);
+        try {
+            loader.load();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+
+    }
+
+
+}
diff --git a/src/main/java/edu/kit/formal/gui/controls/ScriptArea.java b/src/main/java/edu/kit/formal/gui/controls/ScriptArea.java
index e5ec572bdd5efae46578d3d1662c52ea4edb906a..b0ad25cac14ba7a1a4809dd3065dc15c30a645cb 100644
--- a/src/main/java/edu/kit/formal/gui/controls/ScriptArea.java
+++ b/src/main/java/edu/kit/formal/gui/controls/ScriptArea.java
@@ -36,7 +36,7 @@ import java.util.Collections;
 import java.util.function.IntFunction;
 
 /**
- * Created by sarah on 5/27/17.
+ * ScriptArea is the textarea on the left side of the GUI. It displays the script code and allows highlighting of lines and setting of breakpoints
  */
 public class ScriptArea extends CodeArea {
     private ObservableSet<Integer> markedLines = FXCollections.observableSet();
@@ -58,8 +58,10 @@ public class ScriptArea extends CodeArea {
         //getStylesheets().add(getClass().getResource("script-keywords.css").toExternalForm());
         getStyleClass().add("script-area");
         textProperty().addListener((prop, oldValue, newValue) -> {
-            clearStyle(0, newValue.length());
-            setStyleSpans(0, highlighter.highlight(newValue));
+            if (newValue.length() != 0) {
+                clearStyle(0, newValue.length());
+                setStyleSpans(0, highlighter.highlight(newValue));
+            }
             highlightProblems();
         });
                /* .successionEnds(Duration.ofMillis(100))
@@ -151,14 +153,12 @@ public class ScriptArea extends CodeArea {
     }
 
     public class GutterFactory implements IntFunction<Node> {
-        private Insets defaultInsets = new Insets(0.0, 5.0, 0.0, 5.0);
-        private Paint defaultTextFill = Color.web("#666");
-        private Font defaultFont = Font.font("monospace", FontPosture.ITALIC, 13);
         private final Background defaultBackground =
                 new Background(new BackgroundFill(Color.web("#ddd"), null, null));
-
         private final Val<Integer> nParagraphs;
-
+        private Insets defaultInsets = new Insets(0.0, 5.0, 0.0, 5.0);
+        private Paint defaultTextFill = Color.web("#666");
+        private Font defaultFont = Font.font("monospace", FontPosture.ITALIC, 13);
         private ObservableList<SimpleObjectProperty<Node>> lineAnnotations = new SimpleListProperty<>(FXCollections.observableArrayList());
 
 
diff --git a/src/main/java/edu/kit/formal/gui/controls/ScriptAreaTab.java b/src/main/java/edu/kit/formal/gui/controls/ScriptAreaTab.java
new file mode 100644
index 0000000000000000000000000000000000000000..e84a0ade2a60946d79ca486d2bf846c9c7f6c55d
--- /dev/null
+++ b/src/main/java/edu/kit/formal/gui/controls/ScriptAreaTab.java
@@ -0,0 +1,35 @@
+package edu.kit.formal.gui.controls;
+
+import javafx.beans.NamedArg;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.Tab;
+
+import java.io.IOException;
+
+/**
+ * Tab with a ScriptArea
+ */
+public class ScriptAreaTab extends Tab {
+
+
+    @FXML
+    private ScriptArea scriptArea;
+
+    public ScriptAreaTab(@NamedArg("text") String title) {
+        super(title);
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("TabScriptArea.fxml"));
+        loader.setRoot(this);
+        loader.setController(this);
+        try {
+            loader.load();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public ScriptArea getScriptArea() {
+        return scriptArea;
+    }
+}
diff --git a/src/main/java/edu/kit/formal/gui/controls/ScriptTabsController.java b/src/main/java/edu/kit/formal/gui/controls/ScriptTabsController.java
new file mode 100644
index 0000000000000000000000000000000000000000..e48ce6d2ec02afcc0b297f1c719e80d020b87115
--- /dev/null
+++ b/src/main/java/edu/kit/formal/gui/controls/ScriptTabsController.java
@@ -0,0 +1,82 @@
+package edu.kit.formal.gui.controls;
+
+import javafx.beans.property.SimpleObjectProperty;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.Tab;
+import javafx.scene.control.TabPane;
+
+import java.io.IOException;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.Iterator;
+
+/**
+ * Controller for TabPane
+ */
+public class ScriptTabsController extends TabPane {
+    /**
+     * String is filepath; if string already exists if new tab should be created nothing happens
+     * If wished for, instead of filepath an object with omre script information may be used
+     */
+    private HashMap<String, ScriptAreaTab> mappingOfTabs = new HashMap();
+
+
+    private SimpleObjectProperty<Tab> activeTab = new SimpleObjectProperty<>();
+
+    public ScriptTabsController() {
+        super();
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("TabPaneScriptArea.fxml"));
+        loader.setRoot(this);
+        loader.setController(this);
+        try {
+            loader.load();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        activeTab.bind(this.getSelectionModel().selectedItemProperty());
+
+
+    }
+
+    /**
+     * Create a new tab with the specified title
+     *
+     * @param
+     */
+    public void createNewTab(String filePath) {
+        if (!mappingOfTabs.containsKey(filePath)) {
+            ScriptAreaTab newTab = new ScriptAreaTab(Paths.get(filePath).getFileName().toString());
+            mappingOfTabs.put(filePath, newTab);
+            this.getTabs().add(newTab);
+            this.getSelectionModel().select(mappingOfTabs.get(filePath));
+
+        } else {
+            System.out.println("File already exists. Will not load it again");
+            this.getSelectionModel().select(mappingOfTabs.get(filePath));
+        }
+    }
+
+    /**
+     * Get the tab with the specified filename as title
+     *
+     * @param title
+     * @return
+     */
+    public ScriptArea getTabContent(String title) {
+        Iterator<Tab> iter = this.getTabs().iterator();
+        while (iter.hasNext()) {
+            ScriptAreaTab currentTab = (ScriptAreaTab) iter.next();
+            if (currentTab.getText().equals(title)) {
+                return currentTab.getScriptArea();
+            }
+        }
+        return null;
+    }
+
+    public ScriptAreaTab getActiveScriptAreaTab() {
+        return (ScriptAreaTab) activeTab.get();
+
+    }
+
+}
diff --git a/src/main/java/edu/kit/formal/gui/controls/TabPaneScriptArea.java b/src/main/java/edu/kit/formal/gui/controls/TabPaneScriptArea.java
deleted file mode 100644
index b9fc0cf4a25deb12c28b06140282f5bfd00b7d48..0000000000000000000000000000000000000000
--- a/src/main/java/edu/kit/formal/gui/controls/TabPaneScriptArea.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package edu.kit.formal.gui.controls;
-
-import javafx.fxml.FXMLLoader;
-import javafx.scene.layout.VBox;
-
-import java.io.IOException;
-
-/**
- * Created by sarah on 6/8/17.
- */
-public class TabPaneScriptArea extends VBox {
-    public TabPaneScriptArea() {
-        super();
-        FXMLLoader loader = new FXMLLoader(getClass().getResource("SectionPane.fxml"));
-        loader.setRoot(this);
-        loader.setController(this);
-        try {
-            loader.load();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-
-    }
-}
diff --git a/src/main/resources/DebuggerMain.fxml b/src/main/resources/DebuggerMain.fxml
index e634c39db71098e1f270695a5255058c49cca731..0a5c87b5307e1bdc50e256242d7ab04992dbc35e 100644
--- a/src/main/resources/DebuggerMain.fxml
+++ b/src/main/resources/DebuggerMain.fxml
@@ -97,16 +97,18 @@
                                 </Button>
                             </items>
                         </ToolBar>
-                        <TabPane fx:id="tabPane" side="left" styleClass="tab-pane"
-                                 tabClosingPolicy="SELECTED_TAB" VBox.vgrow="ALWAYS">
-                            <tabs>
-                                <Tab fx:id="startTab" text="Untitled">
-                                    <content>
-                                        <ScriptArea fx:id="scriptArea" VBox.vgrow="ALWAYS"/>
-                                    </content>
-                                </Tab>
-                            </tabs>
-                        </TabPane>
+                        <ScriptTabsController fx:id="tabPane" side="left" styleClass="tab-pane"
+                                              tabClosingPolicy="SELECTED_TAB" VBox.vgrow="ALWAYS"/>
+                        <!--    <TabPane fx:id="tabPane" side="left" styleClass="tab-pane"
+                                     tabClosingPolicy="SELECTED_TAB" VBox.vgrow="ALWAYS">
+                                <tabs>
+                                    <Tab fx:id="startTab" text="Untitled">
+                                        <content>
+                                            <ScriptArea fx:id="scriptArea" VBox.vgrow="ALWAYS"/>
+                                        </content>
+                                    </Tab>
+                                </tabs>
+                            </TabPane>-->
 
 
                     </children>
diff --git a/src/main/resources/edu/kit/formal/gui/controls/InspectionView.fxml b/src/main/resources/edu/kit/formal/gui/controls/InspectionView.fxml
new file mode 100644
index 0000000000000000000000000000000000000000..2ee862004cc6a303374f07247d3167591a893306
--- /dev/null
+++ b/src/main/resources/edu/kit/formal/gui/controls/InspectionView.fxml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import de.jensd.fx.glyphs.materialdesignicons.MaterialDesignIconView?>
+<?import edu.kit.formal.gui.controls.*?>
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.*?>
+<fx:root xmlns:fx="http://javafx.com/fxml"
+         xmlns="http://javafx.com/javafx"
+         type="javafx.scene.control.Tab">
+    <SectionPane title="Current Goals">
+        <headerRight>
+            <Button onMouseClicked="#showGoalOptions">
+                <graphic>
+                    <MaterialDesignIconView glyphName="WRENCH"/>
+                </graphic>
+            </Button>
+        </headerRight>
+        <center>
+            <ListView fx:id="goalView"/>
+        </center>
+    </SectionPane>
+
+    <SplitPane>
+        <padding>
+            <Insets top="5" left="5" right="5" bottom="5"/>
+        </padding>
+        <items>
+            <SectionPane title="Sequent">
+                <headerRight>
+                    <Button>
+                        <graphic>
+                            <MaterialDesignIconView glyphName="WRENCH"/>
+                        </graphic>
+                    </Button>
+                </headerRight>
+                <center>
+                    <SequentView fx:id="sequentView"/>
+                </center>
+            </SectionPane>
+            <SectionPane title="Source Code">
+                <center>
+                    <JavaArea fx:id="javaSourceCode"/>
+                </center>
+            </SectionPane>
+        </items>
+    </SplitPane>
+
+</fx:root>
\ No newline at end of file
diff --git a/src/main/resources/edu/kit/formal/gui/controls/TabPaneScriptArea.fxml b/src/main/resources/edu/kit/formal/gui/controls/TabPaneScriptArea.fxml
index 5ba3e8699d0efd7cdbed55b09d76c4514b6b9fcc..d0926e93d998ef5b75b35ab4ea5503caa0ad59d2 100644
--- a/src/main/resources/edu/kit/formal/gui/controls/TabPaneScriptArea.fxml
+++ b/src/main/resources/edu/kit/formal/gui/controls/TabPaneScriptArea.fxml
@@ -1,22 +1,23 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import edu.kit.formal.gui.controls.ScriptArea?>
-<?import javafx.scene.control.Tab?>
-<?import javafx.scene.control.TabPane?>
-<?import javafx.scene.layout.*?>
+<?import edu.kit.formal.gui.controls.ScriptAreaTab?>
+<?import edu.kit.formal.gui.controls.ScriptTabsController?>
 <fx:root xmlns:fx="http://javafx.com/fxml/1" prefHeight="100" prefWidth="250" styleClass="tab-pane"
-         type="javafx.scene.layout.BorderPane" xmlns="http://javafx.com/javafx/8.0.112">
-    <VBox>
-        <TabPane fx:id="tabPane" side="left"
-                 tabClosingPolicy="SELECTED_TAB" VBox.vgrow="ALWAYS">
-            <tabs>
-                <Tab fx:id="startTab" text="Untitled">
-                    <content>
-                        <ScriptArea fx:id="scriptArea" VBox.vgrow="ALWAYS"/>
-                    </content>
-                </Tab>
-            </tabs>
-        </TabPane>
-    </VBox>
+         type="ScriptTabsController" xmlns="http://javafx.com/javafx/8.0.112">
+    <!--  <VBox> -->
+    <ScriptAreaTab text="Untitled"/>
+
+    <!--        <TabPane fx:id="tabPane" side="left"
+                     tabClosingPolicy="SELECTED_TAB" VBox.vgrow="ALWAYS">
+                <tabs>
+                    <ScriptAreaTab text="Untitled"></ScriptAreaTab>
+                   <Tab fx:id="startTab" text="Untitled">
+                        <content>
+                            <ScriptArea fx:id="scriptArea" VBox.vgrow="ALWAYS"/>
+                        </content>
+                    </Tab>
+                </tabs>
+            </TabPane>-->
+    <!-- </VBox> -->
 
 </fx:root>
\ No newline at end of file
diff --git a/src/main/resources/edu/kit/formal/gui/controls/TabScriptArea.fxml b/src/main/resources/edu/kit/formal/gui/controls/TabScriptArea.fxml
new file mode 100644
index 0000000000000000000000000000000000000000..733b73c6874b54b2e3b1f4a10b5aa6c170688ea0
--- /dev/null
+++ b/src/main/resources/edu/kit/formal/gui/controls/TabScriptArea.fxml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import edu.kit.formal.gui.controls.ScriptArea?>
+<?import edu.kit.formal.gui.controls.ScriptAreaTab?>
+<fx:root xmlns:fx="http://javafx.com/fxml"
+         xmlns="http://javafx.com/javafx"
+         type="edu.kit.formal.gui.controls.ScriptAreaTab">
+    <content>
+        <ScriptArea fx:id="scriptArea"/>
+    </content>
+</fx:root>
\ No newline at end of file