diff --git a/src/main/java/de/neemann/digital/core/element/Keys.java b/src/main/java/de/neemann/digital/core/element/Keys.java
index ea0c0e10d..d629a7e68 100644
--- a/src/main/java/de/neemann/digital/core/element/Keys.java
+++ b/src/main/java/de/neemann/digital/core/element/Keys.java
@@ -452,7 +452,7 @@ public final class Keys {
      * enables the grid
      */
     public static final Key<Boolean> SETTINGS_GRID
-            = new Key<>("grid", false);
+            = new Key<>("grid", true);
 
     /**
      * enables the wire bits view
@@ -786,6 +786,14 @@ public final class Keys {
      * Circuit is generic
      */
     public static final Key<Boolean> IS_GENERIC =
-            new Key<Boolean>("isGeneric", false).setSecondary();
+            new Key<>("isGeneric", false).setSecondary();
+
+
+    /**
+     * Enables the tutorial
+     */
+    public static final Key<Boolean> SETTINGS_SHOW_TUTORIAL =
+            new Key<>("showTutorial", true).setSecondary();
+
 
 }
diff --git a/src/main/java/de/neemann/digital/gui/Main.java b/src/main/java/de/neemann/digital/gui/Main.java
index 9d34eef7f..10e57a62a 100644
--- a/src/main/java/de/neemann/digital/gui/Main.java
+++ b/src/main/java/de/neemann/digital/gui/Main.java
@@ -43,6 +43,7 @@ import de.neemann.digital.gui.components.testing.TestAllDialog;
 import de.neemann.digital.gui.components.testing.ValueTableDialog;
 import de.neemann.digital.gui.components.tree.LibraryTreeModel;
 import de.neemann.digital.gui.components.tree.SelectTree;
+import de.neemann.digital.gui.tutorial.InitialTutorial;
 import de.neemann.digital.gui.release.CheckForNewRelease;
 import de.neemann.digital.gui.remote.DigitalHandler;
 import de.neemann.digital.gui.remote.RemoteException;
@@ -1863,6 +1864,10 @@ public final class Main extends JFrame implements ClosingWindowListener.ConfirmS
             if (file != null)
                 builder.setFileToOpen(file);
             SwingUtilities.invokeLater(() -> {
+                final boolean tutorial = Settings.getInstance().getAttributes().get(Keys.SETTINGS_SHOW_TUTORIAL);
+                if (tutorial)
+                    builder.setCircuit(new Circuit());
+
                 Main main = builder.build();
                 try {
                     new RemoteSever(new DigitalHandler(main)).start(41114);
@@ -1871,6 +1876,9 @@ public final class Main extends JFrame implements ClosingWindowListener.ConfirmS
                 }
                 main.setVisible(true);
 
+                if (tutorial)
+                    new InitialTutorial(main).setVisible(true);
+
                 CheckForNewRelease.showReleaseDialog(main);
             });
         }
diff --git a/src/main/java/de/neemann/digital/gui/components/CircuitComponent.java b/src/main/java/de/neemann/digital/gui/components/CircuitComponent.java
index f1e1465c6..d69702540 100644
--- a/src/main/java/de/neemann/digital/gui/components/CircuitComponent.java
+++ b/src/main/java/de/neemann/digital/gui/components/CircuitComponent.java
@@ -133,6 +133,7 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
     private Mouse mouse = Mouse.getMouse();
     private Circuit shallowCopy;
     private CircuitScrollPanel circuitScrollPanel;
+    private TutorialListener tutorialListener;
 
 
     /**
@@ -429,6 +430,8 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
         try {
             if (modification != null) {
                 undoManager.apply(modification);
+                if (tutorialListener != null)
+                    tutorialListener.modified(modification);
                 if (circuitScrollPanel != null)
                     circuitScrollPanel.sizeChanged();
             }
@@ -620,6 +623,9 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
             getCircuit().clearState();
         }
         requestFocusInWindow();
+
+        if (tutorialListener != null)
+            tutorialListener.modified(null);
     }
 
     /**
@@ -1548,7 +1554,7 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
     }
 
     private void insertWires(VisualElement element) {
-        if (element.isAutoWireCompatible()) {
+        if (element.isAutoWireCompatible() && tutorialListener == null) {
             Modifications.Builder<Circuit> wires = new Modifications.Builder<>(Lang.get("lib_wires"));
             for (Pin p : element.getPins())
                 insertWirePin(p, element.getRotate(), wires);
@@ -2292,6 +2298,8 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
             SwingUtilities.convertPointToScreen(p, CircuitComponent.this);
             boolean modelHasChanged = actor.interact(CircuitComponent.this, p, getPosVector(e), modelSync);
             if (modelHasChanged) {
+                if (tutorialListener != null)
+                    tutorialListener.modified(null);
                 modelHasChanged();
             } else
                 graphicHasChanged();
@@ -2317,6 +2325,15 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
         new MouseControllerWizard(wizardNotification).activate();
     }
 
+    /**
+     * Sets the modification listener.
+     *
+     * @param tutorialListener is called every time the circuit is modified
+     */
+    public void setTutorialListener(TutorialListener tutorialListener) {
+        this.tutorialListener = tutorialListener;
+    }
+
     /**
      * Deactivate a wizard
      */
@@ -2369,4 +2386,15 @@ public class CircuitComponent extends JComponent implements ChangedListener, Lib
         void closed();
     }
 
+    /**
+     * Listener to get notified if the circuit has changed
+     */
+    public interface TutorialListener {
+        /**
+         * Called if the circuit was modified
+         *
+         * @param modification the modification
+         */
+        void modified(Modification<Circuit> modification);
+    }
 }
diff --git a/src/main/java/de/neemann/digital/gui/tutorial/InitialTutorial.java b/src/main/java/de/neemann/digital/gui/tutorial/InitialTutorial.java
new file mode 100644
index 000000000..2d7579a15
--- /dev/null
+++ b/src/main/java/de/neemann/digital/gui/tutorial/InitialTutorial.java
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2019 Helmut Neemann.
+ * Use of this source code is governed by the GPL v3 license
+ * that can be found in the LICENSE file.
+ */
+package de.neemann.digital.gui.tutorial;
+
+import de.neemann.digital.core.*;
+import de.neemann.digital.core.basic.XOr;
+import de.neemann.digital.core.element.Element;
+import de.neemann.digital.core.element.ElementTypeDescription;
+import de.neemann.digital.core.element.Keys;
+import de.neemann.digital.core.io.In;
+import de.neemann.digital.core.io.Out;
+import de.neemann.digital.draw.elements.Circuit;
+import de.neemann.digital.draw.elements.PinException;
+import de.neemann.digital.draw.elements.VisualElement;
+import de.neemann.digital.draw.library.ElementNotFoundException;
+import de.neemann.digital.draw.model.ModelCreator;
+import de.neemann.digital.gui.Main;
+import de.neemann.digital.gui.Settings;
+import de.neemann.digital.gui.components.CircuitComponent;
+import de.neemann.digital.gui.components.modification.ModifyInsertWire;
+import de.neemann.digital.lang.Lang;
+import de.neemann.digital.undo.Modification;
+import de.neemann.digital.undo.Modifications;
+import de.neemann.gui.LineBreaker;
+import de.neemann.gui.Screen;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * The tutorial dialog.
+ */
+public class InitialTutorial extends JDialog implements CircuitComponent.TutorialListener {
+    private static final ArrayList<Step> STEPS = new ArrayList<>();
+
+    static {
+        STEPS.add(new Step("tutorial1", (cc, mod, t) -> contains(cc, In.DESCRIPTION)));
+        STEPS.add(new Step("tutorial2", (cc, mod, t) -> contains(cc, In.DESCRIPTION, In.DESCRIPTION)));
+        STEPS.add(new Step("tutorial3", (cc, mod, t) -> contains(cc, In.DESCRIPTION, In.DESCRIPTION, XOr.DESCRIPTION)));
+        STEPS.add(new Step("tutorial4", (cc, mod, t) -> contains(cc, In.DESCRIPTION, In.DESCRIPTION, XOr.DESCRIPTION, Out.DESCRIPTION)));
+        STEPS.add(new Step("tutorial5", (cc, mod, t) -> contains(mod, ModifyInsertWire.class)));
+        STEPS.add(new Step("tutorial6", (cc, mod, t) -> isWorking(cc)));
+        STEPS.add(new Step("tutorial7", (cc, mod, t) -> t.main.getModel() != null));
+        STEPS.add(new Step("tutorial8", (cc, mod, t) -> outputIsHigh(t)));
+        STEPS.add(new Step("tutorial9", (cc, mod, t) -> t.main.getModel() == null));
+        STEPS.add(new Step("tutorial10", (cc, mod, t) -> isIONamed(cc, 1, t)));
+        STEPS.add(new Step("tutorial11", (cc, mod, t) -> isIONamed(cc, 3, t)));
+    }
+
+    private final Main main;
+
+    private static boolean outputIsHigh(InitialTutorial t) {
+        Model model = t.main.getModel();
+        if (model == null)
+            return false;
+        List<Node> nl = model.getNodes();
+        if (nl.size() != 1)
+            return false;
+
+        Node n = nl.get(0);
+        if (n instanceof Element) {
+            Element e = (Element) n;
+            try {
+                final ObservableValues outputs = e.getOutputs();
+                if (outputs.size() != 1)
+                    return false;
+                else
+                    return outputs.get(0).getValue() != 0;
+            } catch (PinException ex) {
+                return false;
+            }
+        } else
+            return false;
+    }
+
+    private static boolean isIONamed(CircuitComponent cc, int expected, InitialTutorial t) {
+        HashSet<String> set = new HashSet<>();
+        int num = 0;
+        for (VisualElement ve : cc.getCircuit().getElements()) {
+            if (ve.equalsDescription(In.DESCRIPTION) || ve.equalsDescription(Out.DESCRIPTION)) {
+                String l = ve.getElementAttributes().getLabel();
+                if (!l.isEmpty()) {
+                    if (set.contains(l)) {
+                        t.setTextByID("tutorialUniqueIdents");
+                        return false;
+                    }
+                    set.add(l);
+                    num++;
+                }
+            }
+        }
+        return num == expected;
+    }
+
+    private static boolean isWorking(CircuitComponent cc) {
+        try {
+            new ModelCreator(cc.getCircuit(), cc.getLibrary()).createModel(false);
+            return true;
+        } catch (PinException | NodeException | ElementNotFoundException e) {
+            return false;
+        }
+    }
+
+    private static boolean contains(Modification<Circuit> mod, Class<? extends Modification> modifyClass) {
+        if (mod == null)
+            return false;
+        if (mod.getClass() == modifyClass)
+            return true;
+        if (mod instanceof Modifications) {
+            Modifications m = (Modifications) mod;
+            for (Object i : m.getModifications())
+                if (i.getClass() == modifyClass)
+                    return true;
+        }
+        return false;
+    }
+
+    private static boolean contains(CircuitComponent cc, ElementTypeDescription... descriptions) {
+        ArrayList<VisualElement> el = new ArrayList<>(cc.getCircuit().getElements());
+        if (el.size() != descriptions.length)
+            return false;
+        for (ElementTypeDescription d : descriptions) {
+            Iterator<VisualElement> it = el.iterator();
+            while (it.hasNext()) {
+                if (it.next().equalsDescription(d)) {
+                    it.remove();
+                    break;
+                }
+            }
+        }
+        return el.isEmpty();
+    }
+
+
+    private final JTextPane text;
+    private final CircuitComponent circuitComponent;
+    private int stepIndex;
+
+    /**
+     * Creates the tutorial dialog.
+     *
+     * @param main the main class
+     */
+    public InitialTutorial(Main main) {
+        super(main, Lang.get("tutorial"), false);
+        this.main = main;
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setAlwaysOnTop(true);
+        circuitComponent = main.getCircuitComponent();
+        circuitComponent.setTutorialListener(this);
+
+        addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosed(WindowEvent windowEvent) {
+                circuitComponent.setTutorialListener(null);
+            }
+        });
+
+        text = new JTextPane();
+        text.setEditable(false);
+        text.setFont(Screen.getInstance().getFont(1.2f));
+        text.setPreferredSize(new Dimension(300, 400));
+
+        getContentPane().add(new JScrollPane(text));
+        getContentPane().add(new JButton(new AbstractAction(Lang.get("tutorialNotNeeded")) {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                disableTutorial();
+            }
+        }), BorderLayout.SOUTH);
+
+        pack();
+
+        final Point ml = main.getLocation();
+        setLocation(ml.x - getWidth(), ml.y);
+
+        stepIndex = -1;
+        incIndex();
+
+    }
+
+    private void disableTutorial() {
+        Settings.getInstance().getAttributes().set(Keys.SETTINGS_SHOW_TUTORIAL, false);
+        dispose();
+    }
+
+    private void incIndex() {
+        stepIndex++;
+        if (stepIndex == STEPS.size()) {
+            disableTutorial();
+        } else {
+            setTextByID(STEPS.get(stepIndex).getId());
+        }
+    }
+
+    private void setTextByID(String id) {
+        final String s = Lang.get(id);
+        text.setText(new LineBreaker(1000).breakLines(s));
+    }
+
+    @Override
+    public void modified(Modification<Circuit> modification) {
+        if (STEPS.get(stepIndex).getChecker().accomplished(circuitComponent, modification, this))
+            incIndex();
+    }
+
+    private static final class Step {
+        private final String id;
+        private final Checker checker;
+
+        private Step(String id, Checker checker) {
+            this.id = id;
+            this.checker = checker;
+        }
+
+        public String getId() {
+            return id;
+        }
+
+        public Checker getChecker() {
+            return checker;
+        }
+    }
+
+    private interface Checker {
+        boolean accomplished(CircuitComponent circuitComponent, Modification<Circuit> modification, InitialTutorial t);
+    }
+}
diff --git a/src/main/java/de/neemann/digital/gui/tutorial/package-info.java b/src/main/java/de/neemann/digital/gui/tutorial/package-info.java
new file mode 100644
index 000000000..cc6bdd7cf
--- /dev/null
+++ b/src/main/java/de/neemann/digital/gui/tutorial/package-info.java
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2019 Helmut Neemann.
+ * Use of this source code is governed by the GPL v3 license
+ * that can be found in the LICENSE file.
+ */
+
+/**
+ * Classes used to show the initial tutorial
+ */
+package de.neemann.digital.gui.tutorial;
diff --git a/src/main/java/de/neemann/digital/undo/Modifications.java b/src/main/java/de/neemann/digital/undo/Modifications.java
index 06275a842..9779a5f08 100644
--- a/src/main/java/de/neemann/digital/undo/Modifications.java
+++ b/src/main/java/de/neemann/digital/undo/Modifications.java
@@ -27,6 +27,13 @@ public final class Modifications<A extends Copyable<A>> implements Modification<
             m.modify(a);
     }
 
+    /**
+     * @return The contained modifications
+     */
+    public ArrayList<Modification<A>> getModifications() {
+        return modifications;
+    }
+
     @Override
     public String toString() {
         return name;
diff --git a/src/main/java/de/neemann/gui/LineBreaker.java b/src/main/java/de/neemann/gui/LineBreaker.java
index aca30de18..9ed1cd413 100644
--- a/src/main/java/de/neemann/gui/LineBreaker.java
+++ b/src/main/java/de/neemann/gui/LineBreaker.java
@@ -82,21 +82,28 @@ public class LineBreaker {
 
         StringBuilder word = new StringBuilder();
         pos = indent;
+        boolean lastLineBreak=false;
         for (int i = 0; i < text.length(); i++) {
             char c = text.charAt(i);
             switch (c) {
                 case '\n':
-                    if (preserveLineBreaks) {
+                    if (preserveLineBreaks || lastLineBreak) {
                         addWord(word);
                         lineBreak();
-                        break;
+                    } else {
+                        addWord(word);
+                        lastLineBreak = true;
                     }
+                    break;
                 case '\r':
+                case '\t':
                 case ' ':
                     addWord(word);
+                    lastLineBreak = false;
                     break;
                 default:
                     word.append(c);
+                    lastLineBreak = false;
             }
         }
         addWord(word);
diff --git a/src/main/resources/lang/lang_de.xml b/src/main/resources/lang/lang_de.xml
index 62dcbef39..ef0d4fb91 100644
--- a/src/main/resources/lang/lang_de.xml
+++ b/src/main/resources/lang/lang_de.xml
@@ -1349,6 +1349,9 @@ Sind evtl. die Namen der Variablen nicht eindeutig?</string>
     <string name="key_isGeneric">Schaltung ist generisch</string>
     <string name="key_isGeneric_tt">Erlaubt die Erzeugung von generischen Schaltungen.</string>
 
+    <string name="key_showTutorial">Tutorial beim Start anzeigen</string>
+    <string name="key_showTutorial_tt">Aktiviert das Tutorial.</string>
+
     <string name="mod_insertWire">Leitung eingefügt.</string>
     <string name="mod_insertCopied">Aus Zwischenablage eingefügt.</string>
     <string name="mod_setKey_N0_in_element_N1">Wert ''{0}'' in Element ''{1}'' verändert.</string>
@@ -1953,4 +1956,64 @@ Daher steht auch das Signal 'D_out' zur Verfügung, um in diesem Fall den Wert z
   Gibt es aus einem Zustand keinen unbedingten Übergang, bleibt der Automat in diesem Zustand, wenn keine
   andere Übergangsbedingung erfüllt ist.
 </body></html>]]></string>
+
+    <string name="tutorial">Tutorial</string>
+    <string name="tutorial1">Im Folgenden führt Sie ein kurzes Tutorial zur ersten,
+        einfachen Schaltung:
+
+        Beginnen Sie, indem Sie einen Eingang in die Schaltung einfügen.
+        Sie finden den Eingang im Menu Bauteile▸IO.</string>
+    <string name="tutorial2">Fügen Sie nun einen zweiten Eingang in die Schaltung ein.
+        Sie können auch auf den Eingang in der Toolbar klicken.
+
+        Setzen Sie den zweiten Eingang am besten mit etwas Abstand unter den ersten Eingang.
+        Sie können die Schaltung verschieben, wenn Sie die rechte Maustaste gedrückt halten.
+        Durch klicken auf Bauteile können Sie diese verschieben.
+    </string>
+    <string name="tutorial3">Als nächstes soll ein "Exklusiv Oder" Gatter eingefügt werden.
+        Sie finden dieses Gatter im Menu Bauteile▸Logisch.
+        Setzen Sie dieses Bauteil mit etwas Abstand rechts neben die Eingänge.
+    </string>
+    <string name="tutorial4">Als letztes Bauteil soll noch ein Ausgang eingefügt werden.
+        Platzieren Sie den Ausgang etwas rechts des "Exklusiv Oder" Gatters.
+    </string>
+    <string name="tutorial5">Um die Schaltung zu vervollständigen, sind Verbindungsleitungen zu ziehen.
+
+        Klicken Sie auf den roten Punkt am ersten Eingang und verbinden Sie diesen mit einem Eingang
+        des "Exklusiv Oder" Gatters, indem Sie danach auf einen blauen Punkt des "Exklusiv Oder"
+        Gatters klicken. Die Maustaste NICHT gedrückt halten!
+    </string>
+    <string name="tutorial6">Verbinden Sie den roten Punkt des zweiten Eingangs mit den zweiten blauen
+        Punkten des "Exklusiv Oder" Gatters und den roten Punkt des "Exklusiv Oder" Gatters mit dem
+        blauen Punkt des Ausgangs.
+
+        Während Sie die Leitung zeichnen, können Sie sie durch Klicken auf die Arbeitsfläche anheften.
+        Rechts-Klick bricht das Zeichnen der Leitung ab (Steuerung-Klick unter MacOS).
+    </string>
+    <string name="tutorial7">Damit ist Ihre erste Schaltung funktionsfähig.
+        Um die Simulation zu starten, können Sie auf den Play-Knopf in der Toolbar klicken.
+        Wenn Sie mit der Maus über die Toolbar fahren, werden Tool-Tipps angezeigt.
+    </string>
+    <string name="tutorial8">
+        Die Simulation ist jetzt aktiv.
+        Schalten Sie die Eingänge um, indem Sie darauf klicken.
+    </string>
+    <string name="tutorial9">
+        Um die Simulation zu beenden, klicken Sie auf den Stop-Knopf in der Toolbar.
+    </string>
+    <string name="tutorial10">
+        Der Vollständigkeit halber sollen die Ein- und Ausgänge benannt werden.
+
+        Durch Rechts-Klick auf einen Eingang öffnet sich ein Dialog (Unter MacOS wird
+        Steuerung-Klick verwendet). Hier kann der Eingang mit einer Bezeichnung versehen werden.
+    </string>
+    <string name="tutorial11">
+        Benennen Sie alle Ein- und Ausgänge.
+    </string>
+    <string name="tutorialUniqueIdents">
+        Ein- und Ausgänge sollten stets eindeutig benannt sein.
+    </string>
+    <string name="tutorialNotNeeded">
+        Tutorial überspringen
+    </string>
 </resources>
diff --git a/src/main/resources/lang/lang_en.xml b/src/main/resources/lang/lang_en.xml
index 57d26e567..4a99c25dd 100644
--- a/src/main/resources/lang/lang_en.xml
+++ b/src/main/resources/lang/lang_en.xml
@@ -129,7 +129,7 @@
 
     <!-- IO -->
 
-    <string name="elem_Out">Out</string>
+    <string name="elem_Out">Output</string>
     <string name="elem_Out_tt">Can be used to display an output signal in a circuit.
         This element is also used to connect a circuit to an embedding circuit.
         In this case the connection is bidirectional.
@@ -1335,6 +1335,9 @@
     <string name="key_isGeneric">Circuit is generic</string>
     <string name="key_isGeneric_tt">Allows to create a generic circuit.</string>
 
+    <string name="key_showTutorial">Show Tutorial at Startup</string>
+    <string name="key_showTutorial_tt">Enables the tutorial.</string>
+
     <string name="mod_insertWire">Inserted wire.</string>
     <string name="mod_insertCopied">Insert from clipboard.</string>
     <string name="mod_setKey_N0_in_element_N1">Value ''{0}'' in component ''{1}'' modified.</string>
@@ -1922,4 +1925,56 @@ Therefore, the signal 'D_out' is also available to check the value in this case.
   transition condition is met.
 </body></html>]]></string>
 
+    <string name="tutorial">Tutorial</string>
+    <string name="tutorial1">In the following a short tutorial leads you to the first, simple circuit:
+
+        First, insert an input into the circuit. You will find the input in the menu Components▸IO.</string>
+    <string name="tutorial2">Now add a second input to the circuit. You can also click on the input
+        in the toolbar.
+
+        It is best to place the second input slightly below the first input.
+        You can move the circuit by holding down the right mouse button.
+        By clicking on components you can move them.</string>
+    <string name="tutorial3">Next, an "Exclusive Or" gate is to be inserted.
+        You can find this gate in the menu Components▸Logic.
+        Place this component with some distance to the right of the inputs.</string>
+    <string name="tutorial4">The last component to be inserted is an output.
+        Place it with some distance to the right of the "Exclusive Or" gate.
+    </string>
+    <string name="tutorial5">In order to complete the circuit, connecting wires must be drawn.
+
+        Click on the red dot at the first input and connect it to an input of the "Exclusive Or" gate,
+        by clicking on a blue dot of the "Exclusive Or" gate afterwards.
+        Do NOT drag with mouse button down!
+    </string>
+    <string name="tutorial6">Connect the red dot of the second input to the second blue dot of the
+        "Exclusive Or" gate and the red dot of the "Exclusive Or" gate to the blue dot of the output.
+
+        While drawing, you can pin the wire by clicking somewhere on the canvas.
+        Right-click cancels the drawing of the wire (control-click on MacOS).
+    </string>
+    <string name="tutorial7">Your first circuit is now functional.
+        To start the simulation, you can click on the Play button in the toolbar.
+        If you move the mouse over the toolbar, tool tips are shown.
+    </string>
+    <string name="tutorial8">
+        The simulation is now active. Switch the inputs by clicking on them.
+    </string>
+    <string name="tutorial9">
+        To stop the simulation, click on the Stop button in the toolbar.
+    </string>
+    <string name="tutorial10">
+        For completeness, the inputs and outputs should be labeled.
+
+        Right-click on an input to open a dialog. On MacOS control-click is used.
+        Here the input can be given a name.</string>
+    <string name="tutorial11">
+        Label all inputs and outputs.
+    </string>
+    <string name="tutorialUniqueIdents">
+        Inputs and outputs should always be uniquely named.
+    </string>
+    <string name="tutorialNotNeeded">
+        Skip Tutorial
+    </string>
 </resources>
\ No newline at end of file
diff --git a/src/main/resources/lang/lang_es.xml b/src/main/resources/lang/lang_es.xml
index 587253675..f91653fe0 100644
--- a/src/main/resources/lang/lang_es.xml
+++ b/src/main/resources/lang/lang_es.xml
@@ -241,7 +241,8 @@
   <string name="elem_Splitter">Divisor</string>
   <string name="elem_Splitter_tt">Divide o crea un haz de cables o un bus de datos con más de un bit.
 		Con un bus es posible, por ejemplo, generar conexiones de 16 bits sin tener que generar 16 cables individuales.
-		Las 16 conexiones pueden agruparse en un cable.</string>
+		Las 16 conexiones pueden agruparse en un cable.
+		El divisor tiene una dirección, es decir, sólo puede transmitir señales en una dirección.</string>
   <string name="elem_Splitter_pin_in">Los bits de entrada {0}</string>
   <string name="elem_Splitter_pin_in_one">El bit de entrada {0}</string>
   <string name="elem_Splitter_pin_out">Los bits de salida {0}</string>
@@ -716,7 +717,8 @@
   <string name="err_aSingleClockNecessary">Se necesita un componente de reloj. Todos los flip-flops deben usar una señal de reloj.</string>
   <string name="err_analyseNoInputs">Este circuito no tiene entradas etiquetadas.</string>
   <string name="err_analyseNoOutputs">Este circuito no tiene salidas etiquetadas.</string>
-  <string name="err_breakTimeOut">Después de {0} ciclos, no se produjo ninguna interrupción en el punto de interrupción ''{1}''.</string>
+  <string name="err_breakTimeOut">Después de {0} ciclos, no se produjo ninguna interrupción en el punto de interrupción ''{1}''.
+		Posiblemente el número de ciclos de tiempo muerto en el componente de interrupción deberían incrementarse.</string>
   <string name="err_builder_exprNotSupported">Expresión {0} no soportada.</string>
   <string name="err_builder_operationNotSupported">Operación {0} no soportada.</string>
   <string name="err_builder_couldNotFillLUT">Error creando la tabla de consulta (LUT).</string>
@@ -1257,7 +1259,7 @@
   <string name="menu_saveData_tt">Guardar los datos en archivo CSV</string>
   <string name="menu_speedTest">Test de velocidad</string>
   <string name="menu_speedTest_tt">Hace un test de velocidad calculando la frecuencia de reloj máxima.</string>
-  <string name="menu_step">Paso</string>
+  <string name="menu_step">Paso de puerta</string>
   <string name="menu_step_tt">Calcula un paso de puerta simple</string>
   <string name="menu_synthesise">Sintetizar</string>
   <string name="menu_synthesise_tt">Genera la expresión booleana mínima a partir de una tabla de verdad.</string>
@@ -1723,4 +1725,55 @@ Por tanto, la señal 'D_out' estará también disponible para chequear el valor
   <string name="msg_errorReadingToolchainConfig_N">Error al leer la configuración de la toolchain {0}</string>
   <string name="msg_commandStarted_N">¡El comando "{0}" ha empezado! ¡El procesado puede llevar un tiempo!</string>
   <string name="msg_commandEnded_N">¡El comando "{0}" ha sido completado!</string>
+  <string name="err_thereIsAUnnamedIO">Hay una entrada o una salida sin nombre</string>
+  <string name="err_NameOfIOIsInvalidOrNotUnique_N">La señal "{0}" no es válida o se ha usado varias veces</string>
+  <string name="err_substitutingError">Error al sustituir componentes para el análisis.</string>
+  <string name="err_evaluatingGenericsCode_N_N">Error en la evaluación del código genérico del circuito. Código {1} en el Componente: {0}</string>
+  <string name="msg_errParsingGenerics">Error al analizar código genérico</string>
+  <string name="key_generic">Parametrización genérica</string>
+  <string name="key_generic_tt">Declaraciones hechas para generar un circuito</string>
+  <string name="key_isGeneric">El circuito es genérico</string>
+  <string name="key_isGeneric_tt">Permite crear un circuito genérico</string>
+  <string name="key_showTutorial">Muestra el tutorial en el arranque</string>
+  <string name="key_showTutorial_tt">Habilita el tutorial</string>
+  <string name="stat_inputs">Entradas</string>
+  <string name="stat_bits">Bits</string>
+  <string name="stat_addrBits">Bits de dirección</string>
+  <string name="tutorial">Tutorial</string>
+  <string name="tutorial1">A continuación, podrás diseñar tu primer circuito tras un breve tutorial:
+		
+		Primero, pon una entrada en el circuito. Encontrarás las entradas en el menú Componentes▸Entrada-Salida</string>
+  <string name="tutorial2">Ahora, añade una segunda entrada al circuito. También puedes hacer clic sobre la entrada que ha aparecido en la barra de herramientas.
+		
+		Es mejor colocar la segunda entrada a dos espacios de rejilla debajo de la primera.
+		Puedes mover el circuito presionando el botón derecho del ratón.
+		Haciendo clic sobre las entradas puedes moverlas.</string>
+  <string name="tutorial3">A continuación vamos a insertar una puerta "OR Exclusiva".
+		Puedes encontrarla en el menú Componentes▸Lógica.
+		Coloca el componente a dos espacios de rejilla a la derecha de las entradas.</string>
+  <string name="tutorial4">El último componente que vamos a insertar es una salida.
+		Colócala a dos espacios de rejilla a la derecha de la puerta "OR Exclusiva".</string>
+  <string name="tutorial5">Para completar el circuito hay que dibujar los cables.
+	
+		Haz clic en el punto rojo de la primera entrada y conecta el cable que aparece a una entrada de la puerta "OR Exclusiva"
+		haciendo clic en uno de los puntos azules de dicha puerta.
+		¡NO pinches y arrastres con el botón del ratón!</string>
+  <string name="tutorial6">Conecta los puntos rojos de las entradas con los puntos azules de la puerta "OR Exclusiva"
+		y el punto rojo de dicha puerta con el punto azul de la salida.
+		Así de fácil: un punto rojo va a un punto azul.</string>
+  <string name="tutorial7">Tu primer circuito ya funcionará.
+		Para empezar la simulación, puedes hacer clic en el botón "Simular" de la barra de herramientas.</string>
+  <string name="tutorial8">La simulación ya está activa. Ahora puedes cambiar los valores de las entradas haciendo clic en ellas.</string>
+  <string name="tutorial9">Para terminar la simulación, haz clic en el botón "Stop" de la barra de herramientas.</string>
+  <string name="tutorial10">Para que todo quede perfecto, tendrías que poner etiquetas a las entradas y salidas.
+	
+		Haz clic con el botón derecho en una entrada para abrir un cuadro de diálogo.
+		En MacOS puedes usar el control-clic.
+		Así podrás nombrar la entrada.</string>
+  <string name="tutorial11">Etiqueta todas las entradas y salidas.</string>
+  <string name="tutorialUniqueIdents">Los nombres de las entradas y salidas deben ser únicos.</string>
+  <string name="tutorialNotNeeded">Saltar el tutorial</string>
+  <string name="menu_runToBreakMicro">Ejecutar hasta parar en modo de puerta simple.</string>
+  <string name="menu_runToBreakMicro_tt">Ejecuta todos los pasos de puerta sencillos hasta que se detecta un flanco de subida en un componente de parada.
+		Si no hay componente de parada, se ejecutan los pasos de puerta simple restantes.</string>
 </resources>
diff --git a/src/main/resources/lang/lang_es_ref.xml b/src/main/resources/lang/lang_es_ref.xml
index ab5317f09..48f4d8a59 100644
--- a/src/main/resources/lang/lang_es_ref.xml
+++ b/src/main/resources/lang/lang_es_ref.xml
@@ -111,7 +111,7 @@
         This component can be used to realize any necessary propagation delay.</string>
   <string name="elem_Delay_pin_in">Input of the signal to be delayed.</string>
   <string name="elem_Delay_pin_out">The input signal delayed by one gate delay time.</string>
-  <string name="elem_Out">Out</string>
+  <string name="elem_Out">Output</string>
   <string name="elem_Out_tt">Can be used to display an output signal in a circuit.
         This element is also used to connect a circuit to an embedding circuit.
         In this case the connection is bidirectional.
@@ -246,7 +246,8 @@
   <string name="elem_Splitter">Splitter</string>
   <string name="elem_Splitter_tt">Splits or creates a wire bundle or a data bus with more than one bit.
         With a bus it is e.g. possible to generate 16-bit connections without having to route 16 individual wires.
-        All 16 connections can be merged into one wire.</string>
+        All 16 connections can be merged into one wire.
+        The splitter has a direction, meaning it can only transmit signals in one direction.</string>
   <string name="elem_Splitter_pin_in">The input bits {0}.</string>
   <string name="elem_Splitter_pin_in_one">The input bit {0}.</string>
   <string name="elem_Splitter_pin_out">The output bits {0}.</string>
@@ -725,7 +726,8 @@
   <string name="err_aSingleClockNecessary">A single clock component is necessary. All flip-flops must use this clock signal.</string>
   <string name="err_analyseNoInputs">The circuit has no labeled inputs</string>
   <string name="err_analyseNoOutputs">The circuit has no labeled outputs</string>
-  <string name="err_breakTimeOut">No break detected after {0} cycles at break point ''{1}''.</string>
+  <string name="err_breakTimeOut">No break detected after {0} cycles at break point ''{1}''.
+        Possibly the number of timout cycles in the break component should be increased.</string>
   <string name="err_builder_exprNotSupported">Expression {0} not supported</string>
   <string name="err_builder_operationNotSupported">Operation {0} not supported</string>
   <string name="err_builder_couldNotFillLUT">Error creating the lookup table.</string>
@@ -1270,8 +1272,8 @@
   <string name="menu_saveData_tt">Save data as CSV file</string>
   <string name="menu_speedTest">Speed Test</string>
   <string name="menu_speedTest_tt">Performs a speed test by calculating the max. clock frequency.</string>
-  <string name="menu_step">Step</string>
-  <string name="menu_step_tt">Calculating a single gate step</string>
+  <string name="menu_step">Gate Step</string>
+  <string name="menu_step_tt">Calculates a single gate step</string>
   <string name="menu_synthesise">Synthesise</string>
   <string name="menu_synthesise_tt">Generates the minimal bool expressions described by a truth table.</string>
   <string name="menu_table_N_variables">{0} variables</string>
@@ -1739,4 +1741,60 @@ Therefore, the signal 'D_out' is also available to check the value in this case.
   <string name="msg_errorReadingToolchainConfig_N">Error while reading the toolchain configuration {0}</string>
   <string name="msg_commandStarted_N">Command "{0}" has been started! Processing may take some time!</string>
   <string name="msg_commandEnded_N">The command "{0}" has been completed!</string>
+  <string name="err_thereIsAUnnamedIO">There is a unnamed input or output!</string>
+  <string name="err_NameOfIOIsInvalidOrNotUnique_N">The signal name "{0}" is invalid or used multiple times!</string>
+  <string name="err_substitutingError">Error when substituting components for the analysis.</string>
+  <string name="err_evaluatingGenericsCode_N_N">Error in the evaluation of the generic code of the circuit. Code
+        {1}
+        at Component: {0}</string>
+  <string name="msg_errParsingGenerics">Error while parsing generics code.</string>
+  <string name="key_generic">Generic Parameterization</string>
+  <string name="key_generic_tt">Statements used to generify a circuit.</string>
+  <string name="key_isGeneric">Circuit is generic</string>
+  <string name="key_isGeneric_tt">Allows to create a generic circuit.</string>
+  <string name="key_showTutorial">Show Tutorial at Startup</string>
+  <string name="key_showTutorial_tt">Enables the tutorial.</string>
+  <string name="stat_inputs">Inputs</string>
+  <string name="stat_bits">Bits</string>
+  <string name="stat_addrBits">Addr. Bits</string>
+  <string name="tutorial">Tutorial</string>
+  <string name="tutorial1">In the following a short tutorial leads you to the first, simple circuit:
+
+        First, insert an input into the circuit. You will find the input in the menu Components▸IO.</string>
+  <string name="tutorial2">Now add a second input to the circuit. You can also click on the input
+        in the toolbar.
+
+        It is best to place the second input slightly below the first input.
+        You can move the circuit by holding down the right mouse button.
+        By clicking on components you can move them.</string>
+  <string name="tutorial3">Next, an "Exclusive Or" gate is to be inserted.
+        You can find this gate in the menu Components▸Logic.
+        Place this component with some distance to the right of the inputs.</string>
+  <string name="tutorial4">The last component to be inserted is an output.
+        Place it with some distance to the right of the "Exclusive Or" gate.</string>
+  <string name="tutorial5">In order to complete the circuit, connecting wires must be drawn.
+
+        Click on the red dot at the first input and connect it to an input of the "Exclusive Or" gate,
+        by clicking on a blue dot of the "Exclusive Or" gate afterwards.
+        Do NOT drag with mouse button down!</string>
+  <string name="tutorial6">Connect the red dot of the second input to the second blue dot of the
+        "Exclusive Or" gate and the red dot of the "Exclusive Or" gate to the blue dot of the output.
+
+        While drawing, you can pin the wire by clicking somewhere on the canvas.
+        Right-click cancels the drawing of the wire (control-click on MacOS).</string>
+  <string name="tutorial7">Your first circuit is now functional.
+        To start the simulation, you can click on the Play button in the toolbar.
+        If you move the mouse over the toolbar, tool tips are shown.</string>
+  <string name="tutorial8">The simulation is now active. Switch the inputs by clicking on them.</string>
+  <string name="tutorial9">To stop the simulation, click on the Stop button in the toolbar.</string>
+  <string name="tutorial10">For completeness, the inputs and outputs should be labeled.
+
+        Right-click on an input to open a dialog. On MacOS control-click is used.
+        Here the input can be given a name.</string>
+  <string name="tutorial11">Label all inputs and outputs.</string>
+  <string name="tutorialUniqueIdents">Inputs and outputs should always be uniquely named.</string>
+  <string name="tutorialNotNeeded">Skip Tutorial</string>
+  <string name="menu_runToBreakMicro">Run To Break in Single Gate Mode</string>
+  <string name="menu_runToBreakMicro_tt">Executes all single gate steps until a rising edge is detected on a break component.
+        If there is no break component, the remaining single gate steps are executed.</string>
 </resources>
diff --git a/src/main/resources/lang/lang_pt_ref.xml b/src/main/resources/lang/lang_pt_ref.xml
index 318b2ee96..d9cc9ae5e 100644
--- a/src/main/resources/lang/lang_pt_ref.xml
+++ b/src/main/resources/lang/lang_pt_ref.xml
@@ -114,7 +114,7 @@
   <string name="elem_Delay_pin_in">Input of the signal to be delayed.</string>
   <string name="elem_Delay_pin_out">The input signal delayed by one gate delay time.</string>
   <!-- IO -->
-  <string name="elem_Out">Out</string>
+  <string name="elem_Out">Output</string>
   <string name="elem_Out_tt">Can be used to display an output signal in a circuit.
         This element is also used to connect a circuit to an embedding circuit.
         In this case the connection is bidirectional.
diff --git a/src/test/java/de/neemann/digital/lang/TestLang.java b/src/test/java/de/neemann/digital/lang/TestLang.java
index 83a567b41..df7dbe76f 100644
--- a/src/test/java/de/neemann/digital/lang/TestLang.java
+++ b/src/test/java/de/neemann/digital/lang/TestLang.java
@@ -68,7 +68,7 @@ public class TestLang extends TestCase {
         StringBuilder sb = new StringBuilder();
         for (String key : map.keySet()) {
             if (!keys.contains(key)) {
-                if (!(key.startsWith("key_") || key.startsWith("elem_"))) {
+                if (!(key.startsWith("key_") || key.startsWith("elem_") || key.startsWith("tutorial"))) {
                     if (sb.length() > 0)
                         sb.append(", ");
                     sb.append('"').append(key).append('"');
diff --git a/src/test/java/de/neemann/gui/LineBreakerTest.java b/src/test/java/de/neemann/gui/LineBreakerTest.java
index 8a727ae6a..adf492bfe 100644
--- a/src/test/java/de/neemann/gui/LineBreakerTest.java
+++ b/src/test/java/de/neemann/gui/LineBreakerTest.java
@@ -12,8 +12,8 @@ import junit.framework.TestCase;
 public class LineBreakerTest extends TestCase {
 
     public void testBreakLines() throws Exception {
-        assertEquals("this is a test string", new LineBreaker(60).breakLines("this \n\n is \n a   test \n\r    string"));
-        assertEquals("this is a test\nstring", new LineBreaker(14).breakLines("this \n\n is \n a   test \n\r    string"));
+        assertEquals("this\nis a test string", new LineBreaker(60).breakLines("this \n\n is \n a   test \n\r    string"));
+        assertEquals("this\nis a test\nstring", new LineBreaker(14).breakLines("this \n\n is \n a   test \n\r    string"));
         assertEquals("This is a test string. This\n" +
                 "is a test string. This is a\n" +
                 "test string.", new LineBreaker(27).breakLines("This is a test string. This is a test string. This is a test string."));