--- a/UILayoutTool.st	Fri May 03 10:15:00 2019 +0200
+++ b/UILayoutTool.st	Fri May 03 10:52:38 2019 +0200
@@ -1589,10 +1589,12 @@
     ^ 
     #(FullSpec
        name: windowSpec
+       uuid: 'aeb70aca-6d80-11e9-8727-b8f6b1108e05'
        window: 
       (WindowSpec
          label: 'UILayoutTool-Extent'
          name: 'UILayoutTool-Extent'
+         uuid: 'aeb70dcc-6d80-11e9-8727-b8f6b1108e05'
          min: (Point 10 10)
          bounds: (Rectangle 0 0 506 169)
        )
@@ -1603,6 +1605,7 @@
              label: 'Extent'
              name: 'FramedBox'
              layout: (LayoutFrame 0 0.0 6 0.0 0 1.0 158 0)
+             uuid: 'aeb710a6-6d80-11e9-8727-b8f6b1108e05'
              labelPosition: topLeft
              translateLabel: true
              component: 
@@ -1611,14 +1614,16 @@
                 (LabelSpec
                    label: 'Width:'
                    name: 'labelWidth'
-                   layout: (AlignmentOrigin 89 0 41 0 1 0.5)
+                   layout: (AlignmentOrigin 89 0 37 0 1 0.5)
+                   uuid: 'aeb712e0-6d80-11e9-8727-b8f6b1108e05'
                    translateLabel: true
                    adjust: right
                  )
                 (InputFieldSpec
                    name: 'fieldLeftOffset'
-                   layout: (LayoutFrame 90 0 30 0 140 0 52 0)
+                   layout: (LayoutFrame 90 0 26 0 140 0 48 0)
                    activeHelpKey: hrzExtent
+                   uuid: 'aeb71466-6d80-11e9-8727-b8f6b1108e05'
                    enableChannel: notUsingDefaultExtent
                    tabable: true
                    model: leftOffset
@@ -1632,14 +1637,16 @@
                 (LabelSpec
                    label: 'Height:'
                    name: 'labelHeight'
-                   layout: (AlignmentOrigin 89 0 66 0 1 0.5)
+                   layout: (AlignmentOrigin 89 0 62 0 1 0.5)
+                   uuid: 'aeb71682-6d80-11e9-8727-b8f6b1108e05'
                    translateLabel: true
                    adjust: right
                  )
                 (InputFieldSpec
                    name: 'fieldRightOffset'
-                   layout: (LayoutFrame 90 0 55 0 140 0 77 0)
+                   layout: (LayoutFrame 90 0 51 0 140 0 73 0)
                    activeHelpKey: vrtExtent
+                   uuid: 'aeb717ea-6d80-11e9-8727-b8f6b1108e05'
                    enableChannel: notUsingDefaultExtent
                    tabable: true
                    model: topOffset
@@ -1653,40 +1660,45 @@
                 (CheckBoxSpec
                    label: 'Preferred'
                    name: 'CheckBox1'
-                   layout: (LayoutFrame 169 0 30 0 275 0 52 0)
+                   layout: (LayoutFrame 158 0 26 0 284 0 48 0)
                    activeHelpKey: usePreferredWidth
+                   uuid: 'aeb71a10-6d80-11e9-8727-b8f6b1108e05'
                    model: usePreferredWidth
                    translateLabel: true
                  )
                 (CheckBoxSpec
                    label: 'Dynamic'
                    name: 'CheckBox3'
-                   layout: (LayoutFrame 276 0 30 0 371 0 52 0)
+                   layout: (LayoutFrame 284 0 26 0 404 0 48 0)
                    activeHelpKey: useDynamicPreferredWidth
+                   uuid: 'aeb71c40-6d80-11e9-8727-b8f6b1108e05'
                    model: useDynamicPreferredWidth
                    translateLabel: true
                  )
                 (CheckBoxSpec
                    label: 'Preferred'
                    name: 'CheckBox2'
-                   layout: (LayoutFrame 169 0 58 0 275 0 80 0)
+                   layout: (LayoutFrame 158 0 54 0 284 0 76 0)
                    activeHelpKey: usePreferredHeight
+                   uuid: 'aeb71d9e-6d80-11e9-8727-b8f6b1108e05'
                    model: usePreferredHeight
                    translateLabel: true
                  )
                 (CheckBoxSpec
                    label: 'Dynamic'
                    name: 'CheckBox4'
-                   layout: (LayoutFrame 276 0 58 0 372 0 80 0)
+                   layout: (LayoutFrame 284 0 54 0 404 0 76 0)
                    activeHelpKey: useDynamicPreferredHeight
+                   uuid: 'aeb71ee8-6d80-11e9-8727-b8f6b1108e05'
                    model: useDynamicPreferredHeight
                    translateLabel: true
                  )
                 (CheckBoxSpec
                    label: 'Use Widget''s Default Extent'
                    name: 'useDefaultExtentCheckBox'
-                   layout: (Point 5 84)
+                   layout: (Point 5 80)
                    activeHelpKey: useDefaultExtent
+                   uuid: 'aeb72032-6d80-11e9-8727-b8f6b1108e05'
                    enableChannel: defaultExtentEnabled
                    tabable: true
                    model: useDefaultExtent
@@ -1699,7 +1711,9 @@
           (PopUpListSpec
              label: 'Common Extents'
              name: 'CommonExtentsPopUpList'
-             layout: (LayoutFrame 189 0 21 0 314 0 43 0)
+             layout: (LayoutFrame 189 0 21 0 351 0 43 0)
+             uuid: 'aeb721ae-6d80-11e9-8727-b8f6b1108e05'
+             translateLabel: true
              tabable: true
              menu: listOfCommonExtents
              useIndex: true