diff --git a/DeedyDesigner/Deedy.Activity/ActionViewer.cs b/DeedyDesigner/Deedy.Activity/ActionViewer.cs
index a4eb42b..c2a8eb1 100644
--- a/DeedyDesigner/Deedy.Activity/ActionViewer.cs
+++ b/DeedyDesigner/Deedy.Activity/ActionViewer.cs
@@ -31,6 +31,7 @@ namespace Deedy.Activity
     {
         public static double IndentRuler { get; set; } = 30;
 
+        public ExpandoMapping ExpandoMapping { get; set; } = new ExpandoMapping();
 
         public const string PART_ItemsContainer = "PART_ItemsContainer";
         public const string PART_TitleContainer = "PART_TitleContainer";
diff --git a/DeedyDesigner/Deedy.Activity/Attribute/CombinePartActionAttribute.cs b/DeedyDesigner/Deedy.Activity/Attribute/CombinePartActionAttribute.cs
new file mode 100644
index 0000000..bf44ce0
--- /dev/null
+++ b/DeedyDesigner/Deedy.Activity/Attribute/CombinePartActionAttribute.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Deedy.Activity
+{
+    [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
+    public class CombinePartActionAttribute : Attribute
+    {
+        public CombinePartActionAttribute(int sort) { this.Sort = sort; }
+        public int Sort { get; private set; }
+        public void Binding(object target, PropertyInfo property)
+        {
+            if (!property.CanRead || !property.CanWrite) throw new ArgumentException("绑定为组装部件的属性必须具备写访问器...");
+        }
+    }
+}
diff --git a/DeedyDesigner/Deedy.Activity/BasalAction.cs b/DeedyDesigner/Deedy.Activity/BasalAction.cs
index 0a07465..0262239 100644
--- a/DeedyDesigner/Deedy.Activity/BasalAction.cs
+++ b/DeedyDesigner/Deedy.Activity/BasalAction.cs
@@ -10,11 +10,13 @@ namespace Deedy.Activity
 {
     public abstract class BasalAction : IActionElement
     {
+        public ExpandoMapping ExpandoMapping { get; set; } = new ExpandoMapping();
+
         protected internal BasalAction() { }
-        public string DEClass { get; protected internal set; } = "";
-        public string DETitle { get; set; } = "";
-        public string DERemark { get; set; } = "";
-        public string DEIdentify { get; set; } = "";
+        public string Class { get; protected internal set; } = "";
+        public string Title { get; set; } = "";
+        public string Remark { get; set; } = "";
+        public string Identify { get; set; } = "";
         public int DepthLevel { get; protected internal set; } = 0;
         public bool IsLockedElement { get; set; } = false;
         protected internal LogInfo _InstantInfo = LogInfo.Empty;
diff --git a/DeedyDesigner/Deedy.Activity/Collection/ElementCollection.cs b/DeedyDesigner/Deedy.Activity/Collection/ElementCollection.cs
index 24df19e..2b37b39 100644
--- a/DeedyDesigner/Deedy.Activity/Collection/ElementCollection.cs
+++ b/DeedyDesigner/Deedy.Activity/Collection/ElementCollection.cs
@@ -31,7 +31,7 @@ namespace Deedy.Activity
             {
                 foreach (var item in this.Items)
                 {
-                    if (element.DEClass == item.DEClass && element.DETitle == item.DETitle) return;
+                    if (element.Class == item.Class && element.Title == item.Title) return;
                 }
             }
             base.Add(element);
diff --git a/DeedyDesigner/Deedy.Activity/Collection/ExpandoMapping.cs b/DeedyDesigner/Deedy.Activity/Collection/ExpandoMapping.cs
new file mode 100644
index 0000000..d6d2dd1
--- /dev/null
+++ b/DeedyDesigner/Deedy.Activity/Collection/ExpandoMapping.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Deedy.Activity
+{
+    /// <summary>
+    /// 用于扩展一个对象的非必要属性
+    /// </summary>
+    public class ExpandoMapping : Dictionary<string, string>
+    {
+    }
+}
diff --git a/DeedyDesigner/Deedy.Activity/Contract/Interface/ICombinedElement.cs b/DeedyDesigner/Deedy.Activity/Contract/Interface/ICombinedElement.cs
index f616413..e46843d 100644
--- a/DeedyDesigner/Deedy.Activity/Contract/Interface/ICombinedElement.cs
+++ b/DeedyDesigner/Deedy.Activity/Contract/Interface/ICombinedElement.cs
@@ -7,6 +7,9 @@ using System.Threading.Tasks;
 
 namespace Deedy.Activity
 {
+    /// <summary>
+    /// 组合元素：内部由多个元素组合而成，但不允许修改内部元素的组合逻辑
+    /// </summary>
     public interface ICombinedElement : IElement
     {
         public ElementCollection Elements { get; set; }
diff --git a/DeedyDesigner/Deedy.Activity/Controller/Runtime.cs b/DeedyDesigner/Deedy.Activity/Controller/Runtime.cs
index 3c5d296..02260c3 100644
--- a/DeedyDesigner/Deedy.Activity/Controller/Runtime.cs
+++ b/DeedyDesigner/Deedy.Activity/Controller/Runtime.cs
@@ -8,5 +8,7 @@ namespace Deedy.Activity
 {
     public sealed class Runtime
     {
+        public Runtime() { }
+        public WorkMode WorkMode { get; internal set; } = WorkMode.Waiting;
     }
 }
diff --git a/DeedyDesigner/Deedy.Activity/DeedyVisual/DeedyLayout.cs b/DeedyDesigner/Deedy.Activity/DeedyVisual/DeedyLayout.cs
index 7d5bd90..2083095 100644
--- a/DeedyDesigner/Deedy.Activity/DeedyVisual/DeedyLayout.cs
+++ b/DeedyDesigner/Deedy.Activity/DeedyVisual/DeedyLayout.cs
@@ -10,10 +10,12 @@ namespace Deedy.Activity
 {
     public class DeedyLayout : IDeedyLayout
     {
-        public string DEClass { get; protected internal set; } = "";
-        public string DETitle { get; set; } = "";
-        public string DERemark { get; set; } = "";
-        public string DEIdentify { get; set; } = "";
+        public ExpandoMapping ExpandoMapping { get; set; } = new ExpandoMapping();
+        public DeedyLayout() { }
+        public string Class { get; protected internal set; } = "";
+        public string Title { get; set; } = "";
+        public string Remark { get; set; } = "";
+        public string Identify { get; set; } = "";
         public int DepthLevel { get; protected internal set; } = 0;
         public IElement? ParentElement { get; protected internal set; }
 
diff --git a/DeedyDesigner/Deedy.Activity/Helper.cs b/DeedyDesigner/Deedy.Activity/Helper.cs
index e728369..b74f37e 100644
--- a/DeedyDesigner/Deedy.Activity/Helper.cs
+++ b/DeedyDesigner/Deedy.Activity/Helper.cs
@@ -6,6 +6,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Media;
 using System.Windows;
+using System.Runtime.CompilerServices;
 
 namespace Deedy.Activity
 {
@@ -212,6 +213,10 @@ namespace Deedy.Activity
 
             return default;
         }
+        /// <summary>
+        /// 调整子节点的退出线位置
+        /// </summary>
+        /// <param name="container">要调整的带退出线容器</param>
         public static void AdjustExitlinePosition(this IContainerWithExitline container)
         {
             if (container != null
@@ -237,9 +242,62 @@ namespace Deedy.Activity
                         if (container.ExitlinePosition == ExitlinePosition.Rightlower)
                             lastChild.ExitlinePosition = ExitlinePosition.Rightlower;
                     }
-                    //lastChild.AdjustExitlinePosition();
                 }
             }
         }
+        /// <summary>
+        /// 设置「IElement」对象的「DepthLevel」属性值
+        /// </summary>
+        /// <param name="element">要设置的对象</param>
+        /// <param name="depthLevel">层级深度</param>
+        /// <returns>如果设置失败则返回「False」</returns>
+        public static bool Setter_DepthLevel(this IElement element, int depthLevel)
+        {
+            if (element is BasalAction action)
+            {
+                ActionSetter_DepthLevel(action, depthLevel);
+                return true;
+            }
+            else
+            {
+                try
+                {
+                    element.SetNamedPropertyValue(nameof(IElement.DepthLevel), depthLevel);
+                    return true;
+                }
+                catch { return false; }
+            }
+        }
+        [UnsafeAccessor(UnsafeAccessorKind.Method, Name = "set_DepthLevel")]
+        private static extern void ActionSetter_DepthLevel(BasalAction action, int value);
+
+        /// <summary>
+        /// 设置「IElement」对象的「ParentElement」属性值
+        /// </summary>
+        /// <param name="element">要设置的对象</param>
+        /// <param name="parent">属性值</param>
+        /// <returns>如果设置失败则返回「False」</returns>
+        public static bool Setter_ParentElement(this IElement element, IElement? parent)
+        {
+            if (element is BasalAction action)
+            {
+                ActionSetter_ParentElement(action, parent);
+                return true;
+            }
+            else
+            {
+                try
+                {
+                    element.SetNamedPropertyValue(nameof(IElement.ParentElement), parent);
+                    return true;
+                }
+                catch
+                {
+                    return false;
+                }
+            }
+        }
+        [UnsafeAccessor(UnsafeAccessorKind.Method, Name = "set_ParentElement")]
+        private static extern void ActionSetter_ParentElement(BasalAction action, IElement? value);
     }
 }
diff --git a/DeedyDesigner/Deedy.Activity/IActionViewer.cs b/DeedyDesigner/Deedy.Activity/IActionViewer.cs
index f04d387..78c14cc 100644
--- a/DeedyDesigner/Deedy.Activity/IActionViewer.cs
+++ b/DeedyDesigner/Deedy.Activity/IActionViewer.cs
@@ -42,7 +42,6 @@ namespace Deedy.Activity
         [AllowNull]
         public LogInfoCollection LogInfos { get; }
         public ViewerState ViewerState { get; }
-        public WorkMode WorkMode { get; }
         public Brush FillBrush { get; set; }
         public Brush StrokeBrush { get; set; }
         public double StrokeThickness { get; set; }
diff --git a/DeedyDesigner/Deedy.Activity/IActivity.cs b/DeedyDesigner/Deedy.Activity/IActivity.cs
index 4eddd66..0191d57 100644
--- a/DeedyDesigner/Deedy.Activity/IActivity.cs
+++ b/DeedyDesigner/Deedy.Activity/IActivity.cs
@@ -12,5 +12,7 @@ namespace Deedy.Activity
         public void ReadyToWorking(IElement? element = null, Output? output = null);
         public void ReadyToEditing(Runtime runtime);
         public void ReadyToRunning(Runtime runtime);
+        public WorkMode WorkMode => Runtime?.WorkMode ?? WorkMode.Waiting;
+        public ExpandoMapping ExpandoMapping { get; set; }
     }
 }
diff --git a/DeedyDesigner/Deedy.Activity/IElement.cs b/DeedyDesigner/Deedy.Activity/IElement.cs
index ed395ff..f4193de 100644
--- a/DeedyDesigner/Deedy.Activity/IElement.cs
+++ b/DeedyDesigner/Deedy.Activity/IElement.cs
@@ -12,10 +12,10 @@ namespace Deedy.Activity
 {
     public interface IElement : IActivity, INotifyPropertyChanged
     {
-        public string DEClass { get; }
-        public string DETitle { get; set; }
-        public string DERemark { get; set; }
-        public string DEIdentify { get; set; }
+        public string Class { get; }
+        public string Title { get; set; }
+        public string Remark { get; set; }
+        public string Identify { get; set; }
         public int DepthLevel { get; }
         public IElement? ParentElement { get; }
         public IElement RootElement { get; }
@@ -39,15 +39,18 @@ namespace Deedy.Activity
                     {
                         container.Remove(this);
                         container.Append(this);
-                        this.SetNamedPropertyValue(nameof(ParentElement), element);
+                        //this.SetNamedPropertyValue(nameof(ParentElement), element);
+                        this.Setter_ParentElement(element);
                     }
                 }
             }
             else
             {
-                this.SetNamedPropertyValue(nameof(ParentElement), element);
+                //this.SetNamedPropertyValue(nameof(ParentElement), element);
+                this.Setter_ParentElement(element);
             }
-            this.SetNamedPropertyValue(nameof(DepthLevel), (this.ParentElement?.DepthLevel ?? 0) + 1);
+            //this.SetNamedPropertyValue(nameof(DepthLevel), (this.ParentElement?.DepthLevel ?? 0) + 1);
+            this.Setter_DepthLevel((this.ParentElement?.DepthLevel ?? 0) + 1);
         }
         /// <summary>
         /// 断开自身与父级节点的链接关系
@@ -55,8 +58,10 @@ namespace Deedy.Activity
         public virtual void Unlink()
         {
             (this.ParentElement as IContainerElement)?.Remove(this);
-            this.SetNamedPropertyValue<IElement?>(nameof(ParentElement), null);
-            this.SetNamedPropertyValue(nameof(DepthLevel), 0);
+            //this.SetNamedPropertyValue<IElement?>(nameof(ParentElement), null);
+            this.Setter_ParentElement(null);
+            //this.SetNamedPropertyValue(nameof(DepthLevel), 0);
+            this.Setter_DepthLevel(0);
         }
         /// <summary>
         /// 构建结构树，设置层级：并且完成参数映射的刷新
diff --git a/DeedyDesigner/Deedy.Testing/Deedy.Testing.csproj b/DeedyDesigner/Deedy.Testing/Deedy.Testing.csproj
index e3e33e3..67588fb 100644
--- a/DeedyDesigner/Deedy.Testing/Deedy.Testing.csproj
+++ b/DeedyDesigner/Deedy.Testing/Deedy.Testing.csproj
@@ -8,4 +8,8 @@
     <UseWPF>true</UseWPF>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\Deedy.Activity\Deedy.Activity.csproj" />
+  </ItemGroup>
+
 </Project>