src/de/steamwar/tutorial/TutorialSystem.java

@@ -21,6 +21,7 @@ package de.steamwar.tutorial;
 
 import de.steamwar.tutorial.commands.BookReplaceCommand;
 import de.steamwar.tutorial.commands.TutorialCommand;
+import de.steamwar.tutorial.commands.UnsignCommand;
 import de.steamwar.tutorial.listener.Joining;
 import de.steamwar.tutorial.listener.RateSign;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -41,6 +42,7 @@ public class TutorialSystem extends JavaPlugin {
 
         new BookReplaceCommand();
         new TutorialCommand();
+        new UnsignCommand();
     }
 
     public static TutorialSystem getPlugin() {

src/de/steamwar/tutorial/commands/UnsignCommand.java

@@ -0,0 +1,21 @@
+package de.steamwar.tutorial.commands;
+
+import de.steamwar.command.SWCommand;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+public class UnsignCommand extends SWCommand {
+
+    public UnsignCommand() {
+        super("unsign");
+    }
+
+    @Register(description = "UNSIGN_HELP")
+    public void unsignCommand(Player p) {
+        ItemStack itemStack = p.getInventory().getItemInMainHand();
+        if (itemStack.getType() != Material.WRITTEN_BOOK) return;
+        itemStack.setType(Material.WRITABLE_BOOK);
+        p.getInventory().setItemInMainHand(itemStack);
+    }
+}