diff --git a/TBO/ApplicationLibrary.cs b/TBO/ApplicationLibrary.cs
index aba92d6..7d2f43b 100644
--- a/TBO/ApplicationLibrary.cs
+++ b/TBO/ApplicationLibrary.cs
@@ -1,4 +1,6 @@
-using System.Drawing;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
 using TBO.i18n;
 using TBO.UI;
 using TBO.UI.tboTK;
@@ -12,17 +14,24 @@
         private Button btFullscreen = new Button("btFullscreen") { Image = Properties.Resources.screen_full, Top = 5 };
         private Button btClose = new Button("btClose") { Image = Properties.Resources.x, Top = 5, Visible = Shell.FullScreen };
         private Button btOpen = new Button("btOpen") { Image = Properties.Resources.file_directory, Top = 5, Left = 5 };
-        private Panel pLib = new Panel("pLib") { Width = 500 };
+        private Button btStudio = new Button("btStudio") { Image = Properties.Resources.pencil, Left = 5 };
+        private Panel pLib = new Panel("pLib") { Width = 500, Scrollable = true };
+
+        private List<LibraryTBO> lib = new List<LibraryTBO>();
 
         public ApplicationLibrary()
         {
             Add(btFullscreen);
             Add(btClose);
             Add(btOpen);
+            Add(btStudio);
+            Add(pLib);
 
             btFullscreen.DoClick = btFullscreenClick;
             btClose.DoClick = btCloseClick;
             btOpen.DoClick = btOpenClick;
+
+            btStudio.Top = btOpen.Height + 10;
         }
 
         public override void ResizeTo(Size size)
@@ -40,6 +49,13 @@
 
         public override void ProcessCommand(string cmd)
         {
+            if (File.Exists(cmd))
+            {
+                using (TBOFile tbo = new TBOFile(cmd))
+                    lib.Add(new LibraryTBO(tbo));
+                Sort();
+                PopulateList();
+            }
         }
 
         public override void Shown()
@@ -47,6 +63,23 @@
             btClose.Visible = Shell.FullScreen;
         }
 
+        private void Sort()
+        {
+            lib.Sort((a, b) => a.Title.CompareTo(b.Title));
+        }
+
+        private void PopulateList()
+        {
+            pLib.RemoveAll();
+            int idx = 0;
+            foreach (LibraryTBO ltbo in lib)
+            {
+                Item i = new Item("tbo_" + idx++) { Image = ltbo.Image, Text = ltbo.Title };
+                pLib.Add(i);
+            }
+            pLib.Invalidate();
+        }
+
         private void btFullscreenClick(Control c, Event e)
         {
             bool nfs = !Shell.FullScreen;
diff --git a/TBO/LibraryTBO.cs b/TBO/LibraryTBO.cs
new file mode 100644
index 0000000..2e874d0
--- /dev/null
+++ b/TBO/LibraryTBO.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using TBO.UI.tboTK;
+
+namespace TBO
+{
+    class LibraryTBO
+    {
+        private string title;
+        private Image image;
+        private string path;
+
+        public LibraryTBO(TBOFile tbo)
+        {
+            title = tbo.Title;
+            GenThumb(tbo);
+            path = tbo.FileName;
+        }
+
+        private void GenThumb(TBOFile tbo)
+        {
+            using (Image page = tbo.GetImage(0)) {
+                if (page == null)
+                    return;
+                image = new Bitmap(256, 256);
+                using (Graphics g = Graphics.FromImage(image))
+                {
+                    g.DrawImageKeepRatioEx(page, 0, 0, image.Width, image.Height);
+                }
+            }
+        }
+
+        public TBOFile Open()
+        {
+            return new TBOFile(path);
+        }
+
+        public string Title => title;
+        public Image Image => image;
+    }
+}
diff --git a/TBO/Properties/Resources.Designer.cs b/TBO/Properties/Resources.Designer.cs
index a97b96e..8f0e93a 100644
--- a/TBO/Properties/Resources.Designer.cs
+++ b/TBO/Properties/Resources.Designer.cs
@@ -103,6 +103,16 @@
         /// <summary>
         ///   Busca un recurso adaptado de tipo System.Drawing.Bitmap.
         /// </summary>
+        internal static System.Drawing.Bitmap pencil {
+            get {
+                object obj = ResourceManager.GetObject("pencil", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Busca un recurso adaptado de tipo System.Drawing.Bitmap.
+        /// </summary>
         internal static System.Drawing.Bitmap repo {
             get {
                 object obj = ResourceManager.GetObject("repo", resourceCulture);
diff --git a/TBO/Properties/Resources.resx b/TBO/Properties/Resources.resx
index 48d1920..62d9996 100644
--- a/TBO/Properties/Resources.resx
+++ b/TBO/Properties/Resources.resx
@@ -142,4 +142,7 @@
   <data name="repo" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\repo.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="pencil" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\pencil.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TBO/Resources/pencil.png b/TBO/Resources/pencil.png
new file mode 100644
index 0000000..7a952cf
--- /dev/null
+++ b/TBO/Resources/pencil.png
Binary files differ
diff --git a/TBO/TBO.csproj b/TBO/TBO.csproj
index fb814aa..a8702fe 100644
--- a/TBO/TBO.csproj
+++ b/TBO/TBO.csproj
@@ -57,6 +57,7 @@
     <Compile Include="i18n\I18n.cs" />
     <Compile Include="i18n\Spanish.cs" />
     <Compile Include="ImageWorks.cs" />
+    <Compile Include="LibraryTBO.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="TBOFile.cs" />
@@ -67,6 +68,7 @@
     <Compile Include="UI\tboTK\Control.cs" />
     <Compile Include="UI\tboTK\Event.cs" />
     <Compile Include="UI\tboTK\IContiner.cs" />
+    <Compile Include="UI\tboTK\Item.cs" />
     <Compile Include="UI\tboTK\Panel.cs" />
     <Compile Include="UI\tboTK\UIExtension.cs" />
     <Compile Include="UI\UIManager.cs" />
@@ -134,6 +136,7 @@
     <None Include="Resources\x.png" />
     <None Include="Resources\file-directory.png" />
     <None Include="Resources\repo.png" />
+    <None Include="Resources\pencil.png" />
     <Content Include="tbo.ico" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
diff --git a/TBO/TBOFile.cs b/TBO/TBOFile.cs
index 5961585..2540c12 100644
--- a/TBO/TBOFile.cs
+++ b/TBO/TBOFile.cs
@@ -382,5 +382,6 @@
         public long Size => fs.Length;
         public int PageCount => pagepos.Count;
         public bool ReadOnly => readOnly;
+        public string FileName => fs.Name;
     }
 }
diff --git a/TBO/UI/Windows/Reader.Designer.cs b/TBO/UI/Windows/Reader.Designer.cs
index 6f05589..96eb82f 100644
--- a/TBO/UI/Windows/Reader.Designer.cs
+++ b/TBO/UI/Windows/Reader.Designer.cs
@@ -33,6 +33,7 @@
             // 
             // Reader
             // 
+            this.AllowDrop = true;
             this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
@@ -43,6 +44,8 @@
             this.Name = "Reader";
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "TBO";
+            this.DragDrop += new System.Windows.Forms.DragEventHandler(this.Reader_DragDrop);
+            this.DragEnter += new System.Windows.Forms.DragEventHandler(this.Reader_DragEnter);
             this.Paint += new System.Windows.Forms.PaintEventHandler(this.Reader_Paint);
             this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Reader_MouseDown);
             this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Reader_MouseMove);
diff --git a/TBO/UI/Windows/Reader.cs b/TBO/UI/Windows/Reader.cs
index f8f4b4d..99b0513 100644
--- a/TBO/UI/Windows/Reader.cs
+++ b/TBO/UI/Windows/Reader.cs
@@ -154,5 +154,17 @@
             }
             Shell.NotifyMouseButton(bt, false);
         }
+
+        private void Reader_DragEnter(object sender, DragEventArgs e)
+        {
+            if (e.Data.GetDataPresent(DataFormats.FileDrop)) e.Effect = DragDropEffects.Copy;
+        }
+
+        private void Reader_DragDrop(object sender, DragEventArgs e)
+        {
+            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
+            foreach (string file in files)
+                Shell.Application.ProcessCommand(file);
+        }
     }
 }
diff --git a/TBO/UI/tboTK/Application.cs b/TBO/UI/tboTK/Application.cs
index 8b4a4ef..b86b4ae 100644
--- a/TBO/UI/tboTK/Application.cs
+++ b/TBO/UI/tboTK/Application.cs
@@ -59,6 +59,13 @@
                 return false;
             return controls.Remove(c.Id);
         }
+
+        public void RemoveAll()
+        {
+            controls.Clear();
+        }
+
+        public Control[] Controls => new List<Control>(controls.Values).ToArray();
         #endregion
 
         public abstract void ResizeTo(Size size);
diff --git a/TBO/UI/tboTK/Control.cs b/TBO/UI/tboTK/Control.cs
index 943457c..0d2a1cc 100644
--- a/TBO/UI/tboTK/Control.cs
+++ b/TBO/UI/tboTK/Control.cs
@@ -71,5 +71,6 @@
         public int Height { get; set; }
         public bool Visible { get; set; } = true;
         public Rectangle Bounds => new Rectangle(Left, Top, Width, Height);
+        public object Tag { get; set; }
     }
 }
diff --git a/TBO/UI/tboTK/IContiner.cs b/TBO/UI/tboTK/IContiner.cs
index d227200..ab3fa76 100644
--- a/TBO/UI/tboTK/IContiner.cs
+++ b/TBO/UI/tboTK/IContiner.cs
@@ -7,5 +7,7 @@
         Control Get(int x, int y, bool deep = false);
         bool Remove(string id);
         bool Remove(Control c);
+        void RemoveAll();
+        Control[] Controls { get; }
     }
 }
diff --git a/TBO/UI/tboTK/Item.cs b/TBO/UI/tboTK/Item.cs
new file mode 100644
index 0000000..51f8798
--- /dev/null
+++ b/TBO/UI/tboTK/Item.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+
+namespace TBO.UI.tboTK
+{
+    class Item : Button
+    {
+        private Font fnt = new Font(FontFamily.GenericSansSerif, 10);
+        private Brush fg = new SolidBrush(Color.Black);
+
+        public Item(string id) : base(id) { }
+
+        public override void Paint(Graphics g, Rectangle clip)
+        {
+            if (Image != null)
+                g.DrawImageKeepRatioEx(Image, 0, 0, Height, Height);
+            g.DrawString(Text, fnt, fg, Height + 5, (Height / 2) - 5);
+        }
+
+        public string Text { get; set; }
+    }
+}
diff --git a/TBO/UI/tboTK/Panel.cs b/TBO/UI/tboTK/Panel.cs
index 2178e7f..4a4595e 100644
--- a/TBO/UI/tboTK/Panel.cs
+++ b/TBO/UI/tboTK/Panel.cs
@@ -6,6 +6,7 @@
     class Panel : Control, IContiner
     {
         private Dictionary<string, Control> controls = new Dictionary<string, Control>();
+        private Point scrollOffset;
 
         public Panel(string id) : base(id)
         {
@@ -20,6 +21,7 @@
             if (controls.ContainsKey(c.Id))
                 return false;
             controls[c.Id] = c;
+            Invalidate();
             return true;
         }
 
@@ -63,15 +65,33 @@
                 return false;
             return controls.Remove(c.Id);
         }
+
+        public void RemoveAll()
+        {
+            controls.Clear();
+            Invalidate();
+        }
+
+        public Control[] Controls => new List<Control>(controls.Values).ToArray();
         #endregion
 
         public override void Paint(Graphics g, Rectangle clip)
         {
+            //g.FillRectangle(new SolidBrush(Color.Wheat), Left, Top, Width, Height);
+           // g.SetClip(new Rectangle(Left, Top, Width, Height));
+            g.TranslateTransform(Left - scrollOffset.X, Top - scrollOffset.Y);
             foreach (Control c in controls.Values)
                 if (c.Clips(clip))
                     c.Paint(g, clip);
         }
 
+        private void SetScrollOffset(Point o)
+        {
+            scrollOffset = o;
+            Invalidate();
+        }
+
         public bool Scrollable { get; set; } = false;
+        public Point ScrollOffset { get => scrollOffset; set => SetScrollOffset(value); }
     }
 }