diff --git a/docs/img/dub_project_editor.png b/docs/img/dub_project_editor.png
index 6f4a6b3e..ccb06a7b 100644
Binary files a/docs/img/dub_project_editor.png and b/docs/img/dub_project_editor.png differ
diff --git a/docs/widgets_dub_project_editor.md b/docs/widgets_dub_project_editor.md
index 1afc7ad2..358bc30b 100644
--- a/docs/widgets_dub_project_editor.md
+++ b/docs/widgets_dub_project_editor.md
@@ -14,8 +14,10 @@ DUB projects with the [SDL format](http://code.dlang.org/package-format?lang=sdl
 A property value can be modified in the field at the bottom. New values always require an extra validation.
 New properties can be added or removed:
 
-- <img src="{%include icurl%}other/textfield_delete.png" class="tlbric"/>: Removes the selected property. Note that the effect is not reflected until the project is saved as a file (since Coedit does not communicate directly with DUB).
 - <img src="{%include icurl%}other/textfield_add.png" class="tlbric"/>: Shows a small dialog that allows to add a new value, a new array or a new object.
+- <img src="{%include icurl%}other/textfield_delete.png" class="tlbric"/>: Removes the selected property. Note that the effect is not reflected until the project is saved as a file (since Coedit does not communicate directly with DUB).
+- <img src="{%include icurl%}other/copy.png" class="tlbric"/>: Duplicates the selected object. Can be used to clone a configuration or a build type.
+- <img src="{%include icurl%}arrow/arrow_update.png" class="tlbric"/>: Updates the source files list.
 
 ![](img/dub_add_property.png)
 
diff --git a/icons/other/copy.png b/icons/other/copy.png
index a9f31a27..8dd48c49 100644
Binary files a/icons/other/copy.png and b/icons/other/copy.png differ
diff --git a/lazproj/coedit.lpi b/lazproj/coedit.lpi
index 2a6182fb..ed4ac89f 100644
--- a/lazproj/coedit.lpi
+++ b/lazproj/coedit.lpi
@@ -525,7 +525,7 @@
       <Unit54>
         <Filename Value="..\src\ce_compilers.pas"/>
         <IsPartOfProject Value="True"/>
-        <ComponentName Value="CmopilersPathsEditor"/>
+        <ComponentName Value="CompilersPathsEditor"/>
         <HasResources Value="True"/>
         <ResourceBaseClass Value="Form"/>
       </Unit54>
diff --git a/src/ce_dubprojeditor.lfm b/src/ce_dubprojeditor.lfm
index 5138cacd..6237be39 100644
--- a/src/ce_dubprojeditor.lfm
+++ b/src/ce_dubprojeditor.lfm
@@ -2,25 +2,25 @@ inherited CEDubProjectEditorWidget: TCEDubProjectEditorWidget
   Left = 771
   Height = 424
   Top = 245
-  Width = 402
+  Width = 407
   Caption = 'DUB project editor'
   ClientHeight = 424
-  ClientWidth = 402
+  ClientWidth = 407
   inherited Back: TPanel
     Height = 424
-    Width = 402
+    Width = 407
     ClientHeight = 424
-    ClientWidth = 402
+    ClientWidth = 407
     inherited Content: TPanel
       Height = 388
-      Width = 402
+      Width = 407
       ClientHeight = 388
-      ClientWidth = 402
+      ClientWidth = 407
       object propTree: TTreeView[0]
         Left = 4
         Height = 352
         Top = 4
-        Width = 394
+        Width = 399
         Align = alClient
         BorderSpacing.Around = 4
         DefaultItemHeight = 16
@@ -38,24 +38,24 @@ inherited CEDubProjectEditorWidget: TCEDubProjectEditorWidget
         Left = 2
         Height = 26
         Top = 360
-        Width = 398
+        Width = 403
         Align = alBottom
         BorderSpacing.Around = 2
         BevelOuter = bvNone
         ClientHeight = 26
-        ClientWidth = 398
+        ClientWidth = 403
         TabOrder = 1
         object edProp: TEdit
           Left = 2
           Height = 22
           Top = 2
-          Width = 366
+          Width = 371
           Align = alClient
           BorderSpacing.Around = 2
           TabOrder = 0
         end
         object btnAcceptProp: TSpeedButton
-          Left = 370
+          Left = 375
           Height = 26
           Hint = 'accept property value'
           Top = 0
@@ -68,9 +68,9 @@ inherited CEDubProjectEditorWidget: TCEDubProjectEditorWidget
       end
     end
     inherited toolbar: TCEToolBar
-      Width = 394
+      Width = 399
       object btnUpdate: TCEToolButton[0]
-        Left = 57
+        Left = 85
         Hint = 'reload project'
         Top = 0
         Caption = 'btnUpdate'
@@ -96,21 +96,12 @@ inherited CEDubProjectEditorWidget: TCEDubProjectEditorWidget
         resourceName = 'TEXTFIELD_ADD'
         scaledSeparator = False
       end
-      object button3: TCEToolButton[3]
-        Left = 85
-        Height = 28
-        Top = 0
-        Width = 11
-        Caption = 'button3'
-        Style = tbsDivider
-        scaledSeparator = False
-      end
-      object fltEdit: TTreeFilterEdit[4]
-        Left = 96
+      object fltEdit: TTreeFilterEdit[3]
+        Left = 128
         Height = 26
         Hint = 'filter properties'
         Top = 2
-        Width = 296
+        Width = 269
         ButtonWidth = 23
         NumGlyphs = 1
         Align = alRight
@@ -120,6 +111,24 @@ inherited CEDubProjectEditorWidget: TCEDubProjectEditorWidget
         TabOrder = 0
         FilteredTreeview = propTree
       end
+      object btnCloneObject: TCEToolButton[4]
+        Left = 57
+        Hint = 'clone selected object'
+        Top = 0
+        Caption = 'btnCloneObject'
+        OnClick = btnCloneObjectClick
+        resourceName = 'COPY'
+        scaledSeparator = False
+      end
+      object button1: TCEToolButton[5]
+        Left = 113
+        Height = 28
+        Top = 0
+        Width = 15
+        Caption = 'button1'
+        Style = tbsDivider
+        scaledSeparator = False
+      end
     end
   end
   inherited contextMenu: TPopupMenu
diff --git a/src/ce_dubprojeditor.pas b/src/ce_dubprojeditor.pas
index f5ac5336..d584bc6a 100644
--- a/src/ce_dubprojeditor.pas
+++ b/src/ce_dubprojeditor.pas
@@ -40,6 +40,7 @@ type
   TCEDubProjectEditorWidget = class(TCEWidget, ICEProjectObserver)
     btnAcceptProp: TSpeedButton;
     btnAddProp: TCEToolButton;
+    btnCloneObject: TCEToolButton;
     btnDelProp: TCEToolButton;
     btnUpdate: TCEToolButton;
     edProp: TEdit;
@@ -52,6 +53,7 @@ type
     procedure btnAddPropClick(Sender: TObject);
     procedure btnDelPropClick(Sender: TObject);
     procedure btnRefreshClick(Sender: TObject);
+    procedure btnCloneObjectClick(Sender: TObject);
     procedure MenuItem1Click(Sender: TObject);
     procedure propTreeSelectionChanged(Sender: TObject);
   private
@@ -317,18 +319,23 @@ end;
 
 {$REGION Editor ----------------------------------------------------------------}
 procedure TCEDubProjectEditorWidget.propTreeSelectionChanged(Sender: TObject);
+var
+  tpe: TJSONtype;
 begin
   fSelectedNode := nil;
   btnDelProp.Enabled := false;
   btnAddProp.Enabled := false;
+  btnCloneObject.Enabled := false;
   if propTree.Selected.isNil then
     exit;
 
   fSelectedNode := propTree.Selected;
+  tpe := TJSONData(fSelectedNode.Data).JSONType;
   btnDelProp.Enabled := (fSelectedNode.Level > 0) and (fSelectedNode.Text <> 'name')
     and fSelectedNode.data.isNotNil;
+  btnAddProp.Enabled := tpe in [jtObject, jtArray];
+  btnCloneObject.Enabled := (tpe = jtObject) and (fSelectedNode.Level > 0);
   updateValueEditor;
-  btnAddProp.Enabled := TJSONData(fSelectedNode.Data).JSONType in [jtObject, jtArray];
 end;
 
 procedure TCEDubProjectEditorWidget.btnAcceptPropClick(Sender: TObject);
@@ -418,6 +425,52 @@ begin
   fProj.loadFromFile(fProj.filename);
 end;
 
+procedure TCEDubProjectEditorWidget.btnCloneObjectClick(Sender: TObject);
+var
+  dat: TJSONData;
+  prt: TJSONData;
+  arr: TJSONArray;
+  obj: TJSONObject;
+  nme: string = '';
+  inm: string;
+  idx: integer = 0;
+begin
+  if fSelectedNode.isNil or fSelectedNode.Data.isNil or fProj.isNil or
+    fSelectedNode.Parent.Data.isNil then
+      exit;
+
+  dat := TJSONData(fSelectedNode.Data);
+  prt := TJSONData(fSelectedNode.Parent.Data);
+
+  if ((prt.JSONType <> jtArray) and (prt.JSONType <> jtObject)) or
+    (dat.JSONType <> jtObject) then
+      exit;
+
+  dat := dat.Clone;
+  if prt.JSONType = jtArray then
+  begin
+    fProj.beginModification;
+    arr := TJSONArray(prt);
+    arr.Insert(arr.Count-1, dat);
+    fProj.endModification;
+  end
+  else
+  begin
+    if not InputQuery('Clone object', 'name of the clone', nme) then
+      exit;
+    fProj.beginModification;
+    obj := TJSONObject(prt);
+    inm := nme;
+    while obj.IndexOfName(inm) <> -1 do
+    begin
+      inm := format('%s_%d', [nme, idx]);
+      idx += 1;
+    end;
+    obj.Add(inm, dat);
+    fProj.endModification;
+  end;
+end;
+
 procedure TCEDubProjectEditorWidget.MenuItem1Click(Sender: TObject);
 begin
   if fProj.isNil or not fProj.filename.fileExists then