diff --git a/SampleForDoc/GacUI/XmlRes/kb_animation/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_animation/Resource.xml
index c72c47be..af95506b 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_animation/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_animation/Resource.xml
@@ -220,7 +220,7 @@
       <Instance ref.Class="sample::MainWindow" ref.Styles="res://MainWindow/SharedStyle" xmlns:x="presentation::controls::GuiSelectableButton::*">
         <Window Text="kb_animation" IconVisible="true" ClientSize="x:480 y:320">
           <x:MutexGroupController ref.Name="groupDirection"/>
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="10" BorderVisible="true" AlignmentToParent="left:0 top:0 right:0 bottom:0" MinSizeLimitation="LimitToElementAndChildren">
             <att.Rows>
               <CellOption>composeType:Percentage percentage:0.5</CellOption>
diff --git a/SampleForDoc/GacUI/XmlRes/kb_compositions/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_compositions/Resource.xml
index c08e1539..4ff4b440 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_compositions/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_compositions/Resource.xml
@@ -99,7 +99,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.Class="sample::MainWindow" xmlns:sample="sample::*" ref.Styles="res://MainWindow/SharedStyle">
         <Window Text="kb_compositions" IconVisible="true" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Tab>
             <att.ControlTemplate>sample::LayoutTabTemplate</att.ControlTemplate>
             <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
diff --git a/SampleForDoc/GacUI/XmlRes/kb_ctemplates/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_ctemplates/Resource.xml
index 30ff3736..e061349e 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_ctemplates/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_ctemplates/Resource.xml
@@ -122,7 +122,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.Class="sample::MainWindow" ref.Styles="res://MainWindow/SharedStyle" xmlns:x="presentation::controls::GuiSelectableButton::*">
         <Window Text="kb_ctemplates" IconVisible="true" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <x:MutexGroupController ref.Name="groupDirection"/>
 
           <Tab>
diff --git a/SampleForDoc/GacUI/XmlRes/kb_elements/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_elements/Resource.xml
index 38270b6f..4b6bef23 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_elements/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_elements/Resource.xml
@@ -22,7 +22,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.Class="sample::MainWindow" ref.Styles="res://MainWindow/SharedStyle">
         <Window Text="kb_elements" IconVisible="true" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table AlignmentToParent="left:0 top:0 right:0 bottom:0" CellPadding="10">
             <att.Rows>
               <CellOption>composeType:Percentage percentage:1.0</CellOption>
diff --git a/SampleForDoc/GacUI/XmlRes/kb_localizedstrings/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_localizedstrings/Resource.xml
index b0f6a094..44791942 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_localizedstrings/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_localizedstrings/Resource.xml
@@ -62,7 +62,7 @@
           ]]>
         </ref.Ctor>
         <Window ref.Name="self" Text-str="Title()" IconVisible="true" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" BorderVisible="false" AlignmentToParent="left:0 top:5 right:0 bottom:0" MinSizeLimitation="LimitToElementAndChildren">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/SampleForDoc/GacUI/XmlRes/kb_xmlres_data/Resource.xml b/SampleForDoc/GacUI/XmlRes/kb_xmlres_data/Resource.xml
index 98adefee..d9458f2c 100644
--- a/SampleForDoc/GacUI/XmlRes/kb_xmlres_data/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/kb_xmlres_data/Resource.xml
@@ -16,7 +16,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.Class="sample::MainWindow" xmlns:sample="sample::*">
         <Window Text="kb_xmlres_data" IconVisible="true" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Tab>
             <att.BoundsComposition-set AlignmentToParent="left:0 top:0 right:0 bottom:0"/>
             <att.Pages>
diff --git a/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/DocumentComponents.xml b/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/DocumentComponents.xml
index 06aafd09..a2503c0a 100644
--- a/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/DocumentComponents.xml
+++ b/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/DocumentComponents.xml
@@ -7,7 +7,7 @@
         ]]>
       </ref.Members>
       <Window ref.Name="self" Text="Hyperlink" ClientSize="x:320 y:80" SizeBox="false" MinimizedBox="false" MaximizedBox="false" ShowInTaskBar="false">
-        <att.BoundsComposition-set PreferredMinSize="x:320 y:80"/>
+        <att.ContainerComposition-set PreferredMinSize="x:320 y:80"/>
         <Table CellPadding="5" BorderVisible="true" AlignmentToParent="left:0 top:0 right:0 bottom:0">
           <att.Rows>
             <_>composeType:MinSize</_>
diff --git a/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/Resource.xml b/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/Resource.xml
index b4eeafbf..7aafb6df 100644
--- a/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/Resource.xml
+++ b/Tutorial/GacUI_ControlTemplate/BlackSkin/UI/FullControlTest/Resource.xml
@@ -10,7 +10,7 @@
   <Instance name="MainWindowResource">
     <Instance ref.Class="demo::MainWindow" xmlns:demo="demo::*">
       <Window ref.Name="self" Text="GacUI 完整控件测试" ClientSize="x:640 y:480">
-        <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+        <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
         <Tab>
           <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
           <att.Pages>
diff --git a/Tutorial/GacUI_Controls/AddressBook/UI/Resource.xml b/Tutorial/GacUI_Controls/AddressBook/UI/Resource.xml
index 341b735e..8bd306c5 100644
--- a/Tutorial/GacUI_Controls/AddressBook/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/AddressBook/UI/Resource.xml
@@ -95,7 +95,7 @@
           ]]>
         </ref.Members>
         <Window ref.Name="self" Text="AddressBook" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+          <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
 
           <att.ViewModel-set>
             <att.SelectedCategory-bind>treeViewFolders.SelectedItem as (demo::ICategory^)</att.SelectedCategory-bind>
@@ -309,7 +309,7 @@
           ]]>
         </ref.Members>
         <Window ref.Name="self" Text="New Folder" ClientSize="x:240 y:120" MaximizedBox="false" MinimizedBox="false" SizeBox="false">
-          <att.BoundsComposition-set PreferredMinSize="x:240 y:120"/>
+          <att.ContainerComposition-set PreferredMinSize="x:240 y:120"/>
           <att.FolderName-bind>textBoxName.Text</att.FolderName-bind>
           
           <Table CellPadding="5" AlignmentToParent="left:0 top:0 right:0 bottom:0">
diff --git a/Tutorial/GacUI_Controls/Animation/UI/Resource.xml b/Tutorial/GacUI_Controls/Animation/UI/Resource.xml
index f691a713..d6a9ffac 100644
--- a/Tutorial/GacUI_Controls/Animation/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/Animation/UI/Resource.xml
@@ -204,7 +204,7 @@
         ]]>
       </ref.Ctor>
       <Window ref.Name="self" Text="GacUI XML资源临时测试" ClientSize="x:640 y:480">
-        <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+        <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
 
         <Tab>
           <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
diff --git a/Tutorial/GacUI_Controls/CalculatorAndStateMachine/UI/Resource.xml b/Tutorial/GacUI_Controls/CalculatorAndStateMachine/UI/Resource.xml
index dab231f6..bc3e5db6 100644
--- a/Tutorial/GacUI_Controls/CalculatorAndStateMachine/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/CalculatorAndStateMachine/UI/Resource.xml
@@ -147,7 +147,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" ref.Styles="res://Style">
         <ref.Parameter Name="calculator" Class="demo::Calculator"/>
         <Window Text="CalculatorAndStateMachine" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
 
           <Table AlignmentToParent="left:0 top:0 right:0 bottom:0" CellPadding="5">
             <att.Rows>
diff --git a/Tutorial/GacUI_Controls/ColorPicker/UI/Resource.xml b/Tutorial/GacUI_Controls/ColorPicker/UI/Resource.xml
index 5072a1d0..3016ae5f 100644
--- a/Tutorial/GacUI_Controls/ColorPicker/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/ColorPicker/UI/Resource.xml
@@ -39,7 +39,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
         <Window Text="ColorPicker" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="10" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Controls/ContainersAndButtons/UI/Resource.xml b/Tutorial/GacUI_Controls/ContainersAndButtons/UI/Resource.xml
index a4033ca7..c3b27862 100644
--- a/Tutorial/GacUI_Controls/ContainersAndButtons/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/ContainersAndButtons/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:x="presentation::controls::GuiSelectableButton::*">
         <Window Text="ContainersAndButtons" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <x:MutexGroupController ref.Name="radioGroup"/>
 
           <Tab>
diff --git a/Tutorial/GacUI_Controls/ListControls/UI/Resource.xml b/Tutorial/GacUI_Controls/ListControls/UI/Resource.xml
index 2fccafaf..37651fda 100644
--- a/Tutorial/GacUI_Controls/ListControls/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/ListControls/UI/Resource.xml
@@ -12,7 +12,7 @@
   <Instance name="MainWindowResource">
     <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:demo="demo::*">
       <Window ref.Name="self" Text="ListControls" ClientSize="x:640 y:480">
-        <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+        <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
         <Tab>
           <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
           <att.Pages>
diff --git a/Tutorial/GacUI_Controls/MenuVisibility/UI/Resource.xml b/Tutorial/GacUI_Controls/MenuVisibility/UI/Resource.xml
index e6a35888..8c14e9de 100644
--- a/Tutorial/GacUI_Controls/MenuVisibility/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/MenuVisibility/UI/Resource.xml
@@ -12,7 +12,7 @@
   <Instance name="MainWindowResource">
     <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:demo="demo::*">
       <Window ref.Name="self" Text="MenuVisibility" ClientSize="x:640 y:480">
-        <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+        <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
         <Table AlignmentToParent="left:0 top:0 right:0 bottom:0">
           <att.Rows>
             <_>composeType:MinSize</_>
diff --git a/Tutorial/GacUI_Controls/ProgressAndAsync/UI/Resource.xml b/Tutorial/GacUI_Controls/ProgressAndAsync/UI/Resource.xml
index b22b3851..1b1f6bbe 100644
--- a/Tutorial/GacUI_Controls/ProgressAndAsync/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/ProgressAndAsync/UI/Resource.xml
@@ -42,7 +42,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
         <Window ref.Name="self" Text="ProgressAndAsync" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Controls/TextEditor/UI/FindWindow.xml b/Tutorial/GacUI_Controls/TextEditor/UI/FindWindow.xml
index e0ba4bfd..ef0a0838 100644
--- a/Tutorial/GacUI_Controls/TextEditor/UI/FindWindow.xml
+++ b/Tutorial/GacUI_Controls/TextEditor/UI/FindWindow.xml
@@ -12,7 +12,7 @@
         ]]>
       </ref.Members>
       <Window ref.Name="self" Text="Find" ClientSize="x:360 y:150" MinimizedBox="false" MaximizedBox="false">
-        <att.BoundsComposition-set PreferredMinSize="x:360 y:150"/>
+        <att.ContainerComposition-set PreferredMinSize="x:360 y:150"/>
         <x:MutexGroupController ref.Name="groupDirection"/>
 
         <MessageDialog ref.Name="dialogContentNotFound"
diff --git a/Tutorial/GacUI_Controls/TextEditor/UI/MainWindow.xml b/Tutorial/GacUI_Controls/TextEditor/UI/MainWindow.xml
index ce9172a5..2dc05065 100644
--- a/Tutorial/GacUI_Controls/TextEditor/UI/MainWindow.xml
+++ b/Tutorial/GacUI_Controls/TextEditor/UI/MainWindow.xml
@@ -65,7 +65,7 @@
         ]]>
       </ref.Members>
       <Window ref.Name="self" Text="TextEditor" ClientSize="x:480 y:320" ev.WindowClosing="window_Closing">
-        <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+        <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
 
         <ToolstripCommand ref.Name="commandFileNewText" Text="Text File" Image-uri="res://Images/NewText.png">
           <ev.Executed>commandFileNewText_Executed</ev.Executed>
diff --git a/Tutorial/GacUI_Controls/Win11ToolstripMenu/UI/Resource.xml b/Tutorial/GacUI_Controls/Win11ToolstripMenu/UI/Resource.xml
index 9b3cbba5..2b1715af 100644
--- a/Tutorial/GacUI_Controls/Win11ToolstripMenu/UI/Resource.xml
+++ b/Tutorial/GacUI_Controls/Win11ToolstripMenu/UI/Resource.xml
@@ -51,7 +51,7 @@
           </ToolstripGroupContainer>
         </ToolstripMenu>
 
-        <att.BoundsComposition-set PreferredMinSize="x:320 y:240"/>
+        <att.ContainerComposition-set PreferredMinSize="x:320 y:240"/>
         <Label Font="fontFamily:'Segoe UI' size:24" Text="Right click to show the menu">
           <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
         </Label>
diff --git a/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml b/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
index f92698f7..c15b35c3 100644
--- a/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
+++ b/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="helloworld::MainWindow">
         <Window Text="Hello, world!" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text="Welcome to GacUI Library!">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml b/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
index d71c6347..6b9eee8d 100644
--- a/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
+++ b/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
@@ -7,7 +7,7 @@
     ]]>
   </ref.Members>
   <Window ref.Name="self" Text="Let's Sign Up!" ClientSize="x:320 y:320">
-    <att.BoundsComposition-set PreferredMinSize="x:320 y:320"/>
+    <att.ContainerComposition-set PreferredMinSize="x:320 y:320"/>
     <att.ViewModel-set UserName-bind="textBoxUserName.Text" Password-bind="textBoxPassword.Text"/>
     <Table CellPadding="5" AlignmentToParent="left:0 top:0 right:0 bottom:0">
       <att.Rows>
diff --git a/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml b/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
index 8e832a15..ce67c902 100644
--- a/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
+++ b/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="helloworld::MainWindow">
         <Window Text="Hello, world!" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text="Welcome to GacUI Library!">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_Layout/Alignment/UI/Resource.xml b/Tutorial/GacUI_Layout/Alignment/UI/Resource.xml
index 6a605672..74d12564 100644
--- a/Tutorial/GacUI_Layout/Alignment/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Alignment/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Alignment" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <att.ContainerComposition-set InternalMargin="left:5 top:5 right:5 bottom:5"/>
           <Button Text="Button">
             <att.BoundsComposition-set AlignmentToParent="left:0 top:0 right:-1 bottom:-1" PreferredMinSize="x:100 y:30"/>
diff --git a/Tutorial/GacUI_Layout/Flow/UI/Resource.xml b/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
index ad878604..b92f767b 100644
--- a/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
@@ -73,7 +73,7 @@
         <Window Text="Flow" ClientSize="x:480 y:320">
           <x:MutexGroupController ref.Name="groupAxis"/>
           <x:MutexGroupController ref.Name="groupAlignment"/>
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <att.ContainerComposition-set MinSizeLimitation="LimitToElementAndChildren"/>
 
           <Table AlignmentToParent="left:5 top:5 right:5 bottom:5" CellPadding="5" MinSizeLimitation="LimitToElementAndChildren">
diff --git a/Tutorial/GacUI_Layout/Responsive1/UI/Resource.xml b/Tutorial/GacUI_Layout/Responsive1/UI/Resource.xml
index d9e9f845..975e47a0 100644
--- a/Tutorial/GacUI_Layout/Responsive1/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Responsive1/UI/Resource.xml
@@ -261,7 +261,7 @@
   <Instance name="MainWindowResource">
     <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:demo="demo::*">
       <Window ref.Name="self" Text="Responsive1 (manually control)" ClientSize="x:640 y:480">
-        <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+        <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
         <Table AlignmentToParent="left:0 top:0 right:0 bottom:0" CellPadding="5">
           <att.Rows>
             <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Layout/RichTextEmbedding/UI/MainWindow.xml b/Tutorial/GacUI_Layout/RichTextEmbedding/UI/MainWindow.xml
index a21e8569..8ec0c476 100644
--- a/Tutorial/GacUI_Layout/RichTextEmbedding/UI/MainWindow.xml
+++ b/Tutorial/GacUI_Layout/RichTextEmbedding/UI/MainWindow.xml
@@ -2,7 +2,7 @@
 <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
   <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
   <Window Text="RichTextEmbedding" ClientSize="x:480 y:320">
-    <att.BoundsComposition-set PreferredMinSize="x:480 y:640"/>
+    <att.ContainerComposition-set PreferredMinSize="x:480 y:640"/>
     <att.ContainerComposition-set MinSizeLimitation="LimitToElementAndChildren"/>
 
     <DocumentViewer ref.Name="documentViewer" EditMode="ViewOnly" Document-uri="res://EmbeddedDocument/Document">
diff --git a/Tutorial/GacUI_Layout/Stack/UI/Resource.xml b/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
index fa18033b..1aa4286f 100644
--- a/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
@@ -50,7 +50,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:x="presentation::controls::GuiSelectableButton::*" ref.Styles="res://MainWindow/MainWindowStyle">
         <Window Text="Stack" ClientSize="x:480 y:320">
           <x:MutexGroupController ref.Name="groupStackDirection"/>
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table AlignmentToParent="left:5 top:5 right:5 bottom:5" CellPadding="5">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Layout/Table/UI/Resource.xml b/Tutorial/GacUI_Layout/Table/UI/Resource.xml
index b7b6ce0d..ba49a2e7 100644
--- a/Tutorial/GacUI_Layout/Table/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Table/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Table" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table AlignmentToParent="left:5 top:5 right:5 bottom:5" CellPadding="5" MinSizeLimitation="LimitToElementAndChildren">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Layout/TableSplitter/UI/Resource.xml b/Tutorial/GacUI_Layout/TableSplitter/UI/Resource.xml
index c01264a0..6403b6ea 100644
--- a/Tutorial/GacUI_Layout/TableSplitter/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/TableSplitter/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="TableSplitter" ClientSize="x:640 y:480">
-          <att.BoundsComposition-set PreferredMinSize="x:640 y:480"/>
+          <att.ContainerComposition-set PreferredMinSize="x:640 y:480"/>
 
           <Table CellPadding="5" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
diff --git a/Tutorial/GacUI_Xml/Binding_Bind/UI/Resource.xml b/Tutorial/GacUI_Xml/Binding_Bind/UI/Resource.xml
index a640edbf..6c551e05 100644
--- a/Tutorial/GacUI_Xml/Binding_Bind/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Binding_Bind/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Binding_Bind" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Binding_Eval/UI/Resource.xml b/Tutorial/GacUI_Xml/Binding_Eval/UI/Resource.xml
index 8eab305d..6362ce4c 100644
--- a/Tutorial/GacUI_Xml/Binding_Eval/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Binding_Eval/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Binding_Eval" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text-eval="'1+2+3+4+5+6+7+8+9+10 = ' &amp; (1+2+3+4+5+6+7+8+9+10)">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_Xml/Binding_Format/UI/Resource.xml b/Tutorial/GacUI_Xml/Binding_Format/UI/Resource.xml
index e75ee0ca..a528a32e 100644
--- a/Tutorial/GacUI_Xml/Binding_Format/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Binding_Format/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Binding_Format" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Binding_Uri/UI/Resource.xml b/Tutorial/GacUI_Xml/Binding_Uri/UI/Resource.xml
index 6c85b469..520cecbf 100644
--- a/Tutorial/GacUI_Xml/Binding_Uri/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Binding_Uri/UI/Resource.xml
@@ -44,7 +44,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text-uri="res://Data/Title" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Tab>
             <att.BoundsComposition-set AlignmentToParent="left:5 top:5 right:5 bottom:5"/>
 
diff --git a/Tutorial/GacUI_Xml/Binding_ViewModel/UI/Resource.xml b/Tutorial/GacUI_Xml/Binding_ViewModel/UI/Resource.xml
index 30e2c3aa..6a6dcf17 100644
--- a/Tutorial/GacUI_Xml/Binding_ViewModel/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Binding_ViewModel/UI/Resource.xml
@@ -28,7 +28,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
         <Window Text="Binding_ViewModel" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Event_Cpp/UI/Resource.xml b/Tutorial/GacUI_Xml/Event_Cpp/UI/Resource.xml
index b89a7a3c..a7341f0d 100644
--- a/Tutorial/GacUI_Xml/Event_Cpp/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Event_Cpp/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="true" ref.Class="demo::MainWindow">
         <Window Text="Event_Cpp" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Event_Script/UI/Resource.xml b/Tutorial/GacUI_Xml/Event_Script/UI/Resource.xml
index 32da8142..44ae56d5 100644
--- a/Tutorial/GacUI_Xml/Event_Script/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Event_Script/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Event_Script" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Event_ViewModel/UI/Resource.xml b/Tutorial/GacUI_Xml/Event_ViewModel/UI/Resource.xml
index 5aa4793a..6a532718 100644
--- a/Tutorial/GacUI_Xml/Event_ViewModel/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Event_ViewModel/UI/Resource.xml
@@ -29,7 +29,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
         <Window Text="Event_ViewModel" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" MinSizeLimitation="LimitToElementAndChildren" AlignmentToParent="left:0 top:0 right:0 bottom:0">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Instance_Control/UI/Resource.xml b/Tutorial/GacUI_Xml/Instance_Control/UI/Resource.xml
index da0f57ae..c2b22ed8 100644
--- a/Tutorial/GacUI_Xml/Instance_Control/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Instance_Control/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:x="demo::*">
         <Window Text="Instance_Control" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <x:MyControl Text="This is a control!">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </x:MyControl>
diff --git a/Tutorial/GacUI_Xml/Instance_MultipleWindows/UI/Resource.xml b/Tutorial/GacUI_Xml/Instance_MultipleWindows/UI/Resource.xml
index 7bda1943..afdeafe0 100644
--- a/Tutorial/GacUI_Xml/Instance_MultipleWindows/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Instance_MultipleWindows/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="true" ref.Class="demo::MainWindow">
         <Window Text="Instance_MultipleWindows" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Button Text="Click me to show another window!" ev.Clicked="buttonShowWindow_Clicked">
             <att.BoundsComposition-set Margin="left:20 top:20 right:-1 bottom:-1"/>
           </Button>
@@ -23,7 +23,7 @@
     <Instance name="AnotherWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::AnotherWindow">
         <Window Text="Another Window" ClientSize="x:320 y:280">
-          <att.BoundsComposition-set PreferredMinSize="x:320 y:280"/>
+          <att.ContainerComposition-set PreferredMinSize="x:320 y:280"/>
           <Label Text="This is another window!">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_Xml/Instance_Window/UI/Resource.xml b/Tutorial/GacUI_Xml/Instance_Window/UI/Resource.xml
index b0710db6..c9928264 100644
--- a/Tutorial/GacUI_Xml/Instance_Window/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Instance_Window/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <Window Text="Instance_Window" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text="This is a window!">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml b/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
index a7127144..97df4b5c 100644
--- a/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
@@ -18,7 +18,7 @@
           ]]>
         </ref.Members>
         <Window ref.Name="self" Text="Member_Field" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Table CellPadding="5" AlignmentToParent="left:0 top:0 right:0 bottom:0" MinSizeLimitation="LimitToElementAndChildren">
             <att.Rows>
               <CellOption>composeType:MinSize</CellOption>
diff --git a/Tutorial/GacUI_Xml/Member_Parameter/UI/Resource.xml b/Tutorial/GacUI_Xml/Member_Parameter/UI/Resource.xml
index f52855d3..4b9463d6 100644
--- a/Tutorial/GacUI_Xml/Member_Parameter/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Member_Parameter/UI/Resource.xml
@@ -28,7 +28,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow">
         <ref.Parameter Name="ViewModel" Class="demo::IViewModel"/>
         <Window Text="Member_Parameter" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text-eval="ViewModel.GetText()">
             <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
diff --git a/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml b/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
index d82d0df0..ef9550a7 100644
--- a/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
@@ -12,7 +12,7 @@
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="false" ref.Class="demo::MainWindow" xmlns:x="demo::*">
         <Window Text="Member_Property" ClientSize="x:480 y:320">
-          <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
+          <att.ContainerComposition-set PreferredMinSize="x:480 y:320"/>
           <x:MyControl ref.Name="myControl" Text-format="Selected: $(myControl.SelectedOption)">
             <att.BoundsComposition-set Margin="left:10 top:10"/>
           </x:MyControl>