diff --git a/Applications/Editor/Main/Sources/Presenters/DialogViewModel.cs b/Applications/Editor/Main/Sources/Presenters/DialogViewModel.cs
index 66b4f2945..aeca015c6 100644
--- a/Applications/Editor/Main/Sources/Presenters/DialogViewModel.cs
+++ b/Applications/Editor/Main/Sources/Presenters/DialogViewModel.cs
@@ -16,9 +16,8 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 /* ------------------------------------------------------------------------- */
-using Cube.Xui;
-using System;
 using System.Threading;
+using Cube.Xui;
 
 namespace Cube.Pdf.Editor
 {
@@ -31,7 +30,7 @@ namespace Cube.Pdf.Editor
     /// </summary>
     ///
     /* --------------------------------------------------------------------- */
-    public abstract class DialogViewModel<TModel> : GenericViewModel<TModel>
+    public abstract class DialogViewModel<TModel> : ViewModelBase<TModel>
     {
         #region Constructors
 
@@ -54,7 +53,7 @@ protected DialogViewModel(TModel model,
             SynchronizationContext context
         ) : base(model, aggregator, context)
         {
-            _dispose = Locale.Subscribe(e => Refresh(nameof(Title)));
+            Use(Locale.Subscribe(e => Refresh(nameof(Title))));
         }
 
         #endregion
@@ -117,31 +116,6 @@ SynchronizationContext context
         /* ----------------------------------------------------------------- */
         protected abstract string GetTitle();
 
-        /* ----------------------------------------------------------------- */
-        ///
-        /// Dispose
-        ///
-        /// <summary>
-        /// Releases the unmanaged resources used by the object and
-        /// optionally releases the managed resources.
-        /// </summary>
-        ///
-        /// <param name="disposing">
-        /// true to release both managed and unmanaged resources;
-        /// false to release only unmanaged resources.
-        /// </param>
-        ///
-        /* ----------------------------------------------------------------- */
-        protected override void Dispose(bool disposing)
-        {
-            try { if (disposing) _dispose.Dispose(); }
-            finally { base.Dispose(disposing); }
-        }
-
-        #endregion
-
-        #region Fields
-        private readonly IDisposable _dispose;
         #endregion
     }
 }
diff --git a/Applications/Editor/Main/Sources/Presenters/Insert/PositionViewModel.cs b/Applications/Editor/Main/Sources/Presenters/Insert/PositionViewModel.cs
index a9b4ca002..977c12c52 100644
--- a/Applications/Editor/Main/Sources/Presenters/Insert/PositionViewModel.cs
+++ b/Applications/Editor/Main/Sources/Presenters/Insert/PositionViewModel.cs
@@ -30,7 +30,7 @@ namespace Cube.Pdf.Editor
     /// </summary>
     ///
     /* --------------------------------------------------------------------- */
-    public sealed class PositionViewModel : GenericViewModel<InsertBindable>
+    public sealed class PositionViewModel : ViewModelBase<InsertBindable>
     {
         #region Constructors
 
diff --git a/Applications/Editor/Main/Sources/Presenters/Main/MainViewModelBase.cs b/Applications/Editor/Main/Sources/Presenters/Main/MainViewModelBase.cs
index 93f339994..de40f7ed1 100644
--- a/Applications/Editor/Main/Sources/Presenters/Main/MainViewModelBase.cs
+++ b/Applications/Editor/Main/Sources/Presenters/Main/MainViewModelBase.cs
@@ -39,7 +39,7 @@ namespace Cube.Pdf.Editor
     /// </summary>
     ///
     /* --------------------------------------------------------------------- */
-    public abstract class MainViewModelBase : GenericViewModel<MainFacade>
+    public abstract class MainViewModelBase : ViewModelBase<MainFacade>
     {
         #region Constructors
 
diff --git a/Applications/Editor/Main/Sources/Presenters/Main/RecentViewModel.cs b/Applications/Editor/Main/Sources/Presenters/Main/RecentViewModel.cs
index 01512ca1d..6b6d6745a 100644
--- a/Applications/Editor/Main/Sources/Presenters/Main/RecentViewModel.cs
+++ b/Applications/Editor/Main/Sources/Presenters/Main/RecentViewModel.cs
@@ -33,7 +33,7 @@ namespace Cube.Pdf.Editor
     /// </summary>
     ///
     /* --------------------------------------------------------------------- */
-    public sealed class RecentViewModel : GenericViewModel<DirectoryMonitor>
+    public sealed class RecentViewModel : ViewModelBase<DirectoryMonitor>
     {
         #region Constructors
 
diff --git a/Applications/Editor/Main/Sources/Presenters/GenericViewModel.cs b/Applications/Editor/Main/Sources/Presenters/ViewModelBase.cs
similarity index 96%
rename from Applications/Editor/Main/Sources/Presenters/GenericViewModel.cs
rename to Applications/Editor/Main/Sources/Presenters/ViewModelBase.cs
index 9cbdfe007..320dec158 100644
--- a/Applications/Editor/Main/Sources/Presenters/GenericViewModel.cs
+++ b/Applications/Editor/Main/Sources/Presenters/ViewModelBase.cs
@@ -16,7 +16,6 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 /* ------------------------------------------------------------------------- */
-using Cube.Xui;
 using System;
 using System.Collections.Concurrent;
 using System.Diagnostics;
@@ -24,19 +23,20 @@
 using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Windows.Input;
+using Cube.Xui;
 
 namespace Cube.Pdf.Editor
 {
     /* --------------------------------------------------------------------- */
     ///
-    /// GenericViewModel(TModel)
+    /// ViewModelBase(TModel)
     ///
     /// <summary>
     /// Represents the base class of ViewModels.
     /// </summary>
     ///
     /* --------------------------------------------------------------------- */
-    public abstract class GenericViewModel<TModel> : Presentable<TModel>
+    public abstract class ViewModelBase<TModel> : Presentable<TModel>
     {
         #region Constructors
 
@@ -54,7 +54,7 @@ public abstract class GenericViewModel<TModel> : Presentable<TModel>
         /// <param name="context">Synchronization context.</param>
         ///
         /* ----------------------------------------------------------------- */
-        protected GenericViewModel(TModel model, Aggregator aggregator, SynchronizationContext context) :
+        protected ViewModelBase(TModel model, Aggregator aggregator, SynchronizationContext context) :
             base(model, aggregator, context) { }
 
         #endregion