diff --git a/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml b/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
index 00697ee2..87d89780 100644
--- a/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
+++ b/Tutorial/GacUI_HelloWorlds/CppXml/UI/Resource.xml
@@ -18,7 +18,7 @@
         <Window Text="Hello, world!" ClientSize="x:480 y:320">
           <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text="Welcome to GacUI Library!">
-            <att.Font>fontFamily:{Segoe UI} size:32 antialias:true</att.Font>
+            <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
         </Window>
       </Instance>
diff --git a/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml b/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
index 89b37fb3..d6985a0e 100644
--- a/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
+++ b/Tutorial/GacUI_HelloWorlds/MVVM/UI/MainWindow.xml
@@ -22,12 +22,12 @@
       </att.Columns>
       <Cell Site="row:0 column:0 columnSpan:2">
         <SolidLabel Text="www.gaclib.net" HorizontalAlignment="Center" VerticalAlignment="Center">
-          <att.Font>fontFamily:{Segoe UI} size:40 antialias:true</att.Font>
+          <att.Font>fontFamily:"Segoe UI" size:40 antialias:true</att.Font>
         </SolidLabel>
       </Cell>
       <Cell Site="row:1 column:0">
         <SolidLabel Text="Username: " VerticalAlignment="Center">
-          <att.Font>fontFamily:{Segoe UI} size:12 antialias:true</att.Font>
+          <att.Font>fontFamily:"Segoe UI" size:12 antialias:true</att.Font>
         </SolidLabel>
       </Cell>
       <Cell Site="row:1 column:1">
@@ -37,12 +37,12 @@
       </Cell>
       <Cell Site="row:2 column:1">
         <SolidLabel Color="#FF0000" WrapLine="true" WrapLineHeightCalculation="true" Text-bind="ViewModel.UserNameError">
-          <att.Font>fontFamily:{Segoe UI} size:12 antialias:true</att.Font>
+          <att.Font>fontFamily:"Segoe UI" size:12 antialias:true</att.Font>
         </SolidLabel>
       </Cell>
       <Cell Site="row:3 column:0">
         <SolidLabel Text="Password: " VerticalAlignment="Center">
-          <att.Font>fontFamily:{Segoe UI} size:12 antialias:true</att.Font>
+          <att.Font>fontFamily:"Segoe UI" size:12 antialias:true</att.Font>
         </SolidLabel>
       </Cell>
       <Cell Site="row:3 column:1">
@@ -52,7 +52,7 @@
       </Cell>
       <Cell Site="row:4 column:1">
         <SolidLabel Color="#FF0000" WrapLine="true" WrapLineHeightCalculation="true" Text-bind="ViewModel.PasswordError">
-          <att.Font>fontFamily:{Segoe UI} size:12 antialias:true</att.Font>
+          <att.Font>fontFamily:"Segoe UI" size:12 antialias:true</att.Font>
         </SolidLabel>
       </Cell>
       <Cell Site="row:7 column:0 columnSpan:2">
diff --git a/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml b/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
index 4c187364..c9508f67 100644
--- a/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
+++ b/Tutorial/GacUI_HelloWorlds/Xml/UI/Resource.xml
@@ -12,7 +12,7 @@
         <Window Text="Hello, world!" ClientSize="x:480 y:320">
           <att.BoundsComposition-set PreferredMinSize="x:480 y:320"/>
           <Label Text="Welcome to GacUI Library!">
-            <att.Font>fontFamily:{Segoe UI} size:32 antialias:true</att.Font>
+            <att.Font>fontFamily:"Segoe UI" size:32 antialias:true</att.Font>
           </Label>
         </Window>
       </Instance>
diff --git a/Tutorial/GacUI_Layout/Flow/UI/Resource.xml b/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
index c6ca04f7..fb1fa63a 100644
--- a/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Flow/UI/Resource.xml
@@ -22,7 +22,15 @@
               var radioButton = cast (SelectableButton*) sender.RelatedControl;
               if (radioButton.Selected)
               {
-                var direction = cast (AxisDirection) radioButton.Text;
+                var direction : AxisDirection =
+                  radioButton.Text == "LeftDown"  ? LeftDown :
+                  radioButton.Text == "LeftUp"    ? LeftUp :
+                  radioButton.Text == "RightDown" ? RightDown :
+                  radioButton.Text == "RightUp"   ? RightUp :
+                  radioButton.Text == "UpRight"   ? UpRight :
+                  radioButton.Text == "UpLeft"    ? UpLeft :
+                  radioButton.Text == "DownLeft"  ? DownLeft :
+                  DownRight;
                 var axis = new Axis^(direction);
                 flowLayout.Axis = axis;
               }
@@ -37,7 +45,10 @@
               var radioButton = cast (SelectableButton*) sender.RelatedControl;
               if (radioButton.Selected)
               {
-                flowLayout.Alignment = cast (FlowAlignment) radioButton.Text;
+                flowLayout.Alignment =
+                  radioButton.Text == "Left"   ? Left :
+                  radioButton.Text == "Center" ? Center :
+                  Extend;
               }
             }
           ]]>
@@ -49,11 +60,11 @@
             {
               for (flowItem in flowLayout.FlowItems)
               {
-                flowItem.ExtraMargin = cast Margin "";
+                flowItem.ExtraMargin = {};
               }
             
               var selectedItem = cast (FlowItem*) sender.Parent;
-              selectedItem.ExtraMargin = cast Margin "left:10 top:10 right:10 bottom:10";
+              selectedItem.ExtraMargin = {left:10 top:10 right:10 bottom:10};
               flowLayout.MoveChild(selectedItem, flowLayout.FlowItems.Count - 1);
             }
           ]]>
diff --git a/Tutorial/GacUI_Layout/Stack/UI/Resource.xml b/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
index 0cf17b9a..60dd6ae9 100644
--- a/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Stack/UI/Resource.xml
@@ -22,7 +22,11 @@
               var radioButton = cast (SelectableButton*) sender.RelatedControl;
               if (radioButton.Selected)
               {
-                stackLayout.Direction = cast (Stack::Direction) radioButton.Text;
+                stackLayout.Direction = 
+                  radioButton.Text == "Horizontal" ? Horizontal :
+                  radioButton.Text == "Vertical" ? Vertical :
+                  radioButton.Text == "ReversedHorizontal" ? ReversedHorizontal :
+                  ReversedVertical;
               }
             }
           ]]>
@@ -34,11 +38,11 @@
             {
               for (stackItem in stackLayout.StackItems)
               {
-                stackItem.ExtraMargin = cast Margin "";
+                stackItem.ExtraMargin = {};
               }
             
               var selectedItem = cast (StackItem*) sender.Parent;
-              selectedItem.ExtraMargin = cast Margin "left:10 top:10 right:10 bottom:10";
+              selectedItem.ExtraMargin = {left:10 top:10 right:10 bottom:10};
               stackLayout.MoveChild(selectedItem, stackLayout.StackItems.Count - 1);
             }
           ]]>
diff --git a/Tutorial/GacUI_Layout/Table/UI/Resource.xml b/Tutorial/GacUI_Layout/Table/UI/Resource.xml
index 49ae52fe..2ce00c12 100644
--- a/Tutorial/GacUI_Layout/Table/UI/Resource.xml
+++ b/Tutorial/GacUI_Layout/Table/UI/Resource.xml
@@ -33,7 +33,7 @@
             </att.Columns>
 
             <Cell Site="row:0 column:0 columnSpan:3">
-              <SolidLabel Font="fontFamily:{Lucida Calligraphy} size:96" HorizontalAlignment="Center" VerticalAlignment="Center" Text="GacUI"/>
+              <SolidLabel Font="fontFamily:'Lucida Calligraphy' size:96" HorizontalAlignment="Center" VerticalAlignment="Center" Text="GacUI"/>
             </Cell>
 
             <Cell Site="row:2 column:0">