diff --git a/applications/lazstats/source/LazStats.lpi b/applications/lazstats/source/LazStats.lpi
index 102009030..6fa18af5b 100644
--- a/applications/lazstats/source/LazStats.lpi
+++ b/applications/lazstats/source/LazStats.lpi
@@ -405,7 +405,7 @@
       <Unit37>
         <Filename Value="forms\analysis\correlation\partialsunit.pas"/>
         <IsPartOfProject Value="True"/>
-        <ComponentName Value="PartialsFrm"/>
+        <ComponentName Value="PartialsForm"/>
         <HasResources Value="True"/>
         <ResourceBaseClass Value="Form"/>
         <UnitName Value="PartialsUnit"/>
diff --git a/applications/lazstats/source/forms/analysis/correlation/partialsunit.lfm b/applications/lazstats/source/forms/analysis/correlation/partialsunit.lfm
index 52863ff8c..38f1a451a 100644
--- a/applications/lazstats/source/forms/analysis/correlation/partialsunit.lfm
+++ b/applications/lazstats/source/forms/analysis/correlation/partialsunit.lfm
@@ -1,573 +1,275 @@
-object PartialsFrm: TPartialsFrm
+inherited PartialsForm: TPartialsForm
   Left = 593
-  Height = 398
+  Height = 328
   Top = 175
-  Width = 361
+  Width = 513
   HelpType = htKeyword
   HelpKeyword = 'html/PartialSemipartial.htm'
-  AutoSize = True
   Caption = 'Partial Correlation'
-  ClientHeight = 398
-  ClientWidth = 361
-  OnActivate = FormActivate
-  OnCreate = FormCreate
-  OnShow = FormShow
-  Position = poMainFormCenter
-  LCLVersion = '2.1.0.0'
-  object Label1: TLabel
-    AnchorSideLeft.Control = Owner
-    AnchorSideTop.Control = Owner
-    Left = 8
-    Height = 15
-    Top = 8
-    Width = 100
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 8
-    Caption = 'Available Variables:'
-    ParentColor = False
+  ClientHeight = 328
+  ClientWidth = 513
+  inherited ParamsPanel: TPanel
+    Height = 312
+    ClientHeight = 312
+    inherited CloseBtn: TButton
+      Top = 287
+      TabOrder = 13
+    end
+    inherited ComputeBtn: TButton
+      Top = 287
+      TabOrder = 12
+    end
+    inherited ResetBtn: TButton
+      Top = 287
+      TabOrder = 11
+    end
+    inherited HelpBtn: TButton
+      Tag = 136
+      Top = 287
+      TabOrder = 10
+    end
+    inherited ButtonBevel: TBevel
+      Top = 271
+    end
+    object Label1: TLabel[5]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideTop.Control = ParamsPanel
+      Left = 0
+      Height = 15
+      Top = 0
+      Width = 100
+      Caption = 'Available Variables:'
+      ParentColor = False
+    end
+    object VarList: TListBox[6]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideTop.Control = Label1
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = DepInBtn
+      AnchorSideBottom.Control = Bevel3
+      Left = 0
+      Height = 135
+      Top = 17
+      Width = 126
+      Anchors = [akTop, akLeft, akRight, akBottom]
+      BorderSpacing.Top = 2
+      BorderSpacing.Right = 6
+      ItemHeight = 0
+      MultiSelect = True
+      OnDblClick = VarListDblClick
+      OnSelectionChange = VarListSelectionChange
+      TabOrder = 0
+    end
+    object PartInBtn: TBitBtn[7]
+      AnchorSideTop.Control = VarList
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = Bevel1
+      AnchorSideBottom.Control = Label4
+      Left = 33
+      Height = 26
+      Top = 160
+      Width = 26
+      Anchors = [akTop, akRight]
+      BorderSpacing.Top = 8
+      Images = MainDataModule.ImageList
+      ImageIndex = 3
+      OnClick = PartInBtnClick
+      Spacing = 0
+      TabOrder = 7
+    end
+    object PartOutBtn: TBitBtn[8]
+      AnchorSideLeft.Control = Bevel1
+      AnchorSideLeft.Side = asrBottom
+      AnchorSideTop.Control = PartInBtn
+      Left = 67
+      Height = 26
+      Top = 160
+      Width = 26
+      Images = MainDataModule.ImageList
+      ImageIndex = 2
+      OnClick = PartOutBtnClick
+      Spacing = 0
+      TabOrder = 8
+    end
+    object Label4: TLabel[9]
+      AnchorSideLeft.Control = PartList
+      AnchorSideTop.Control = PartInBtn
+      AnchorSideTop.Side = asrBottom
+      AnchorSideBottom.Control = PartList
+      Left = 0
+      Height = 15
+      Top = 194
+      Width = 121
+      BorderSpacing.Top = 8
+      BorderSpacing.Bottom = 2
+      Caption = 'Variables Partialed Out:'
+      ParentColor = False
+    end
+    object PartList: TListBox[10]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideTop.Control = Label4
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = VarList
+      AnchorSideRight.Side = asrBottom
+      AnchorSideBottom.Control = ButtonBevel
+      Left = 0
+      Height = 60
+      Top = 211
+      Width = 126
+      Anchors = [akTop, akLeft, akRight, akBottom]
+      BorderSpacing.Top = 2
+      ItemHeight = 0
+      MultiSelect = True
+      OnDblClick = PartListDblClick
+      OnSelectionChange = VarListSelectionChange
+      TabOrder = 9
+    end
+    object DepInBtn: TBitBtn[11]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideLeft.Side = asrCenter
+      AnchorSideTop.Control = VarList
+      Left = 132
+      Height = 26
+      Top = 17
+      Width = 26
+      Images = MainDataModule.ImageList
+      ImageIndex = 1
+      OnClick = DepInBtnClick
+      Spacing = 0
+      TabOrder = 1
+    end
+    object DepOutBtn: TBitBtn[12]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideLeft.Side = asrCenter
+      AnchorSideTop.Control = DepInBtn
+      AnchorSideTop.Side = asrBottom
+      Left = 132
+      Height = 26
+      Top = 47
+      Width = 26
+      BorderSpacing.Top = 4
+      Images = MainDataModule.ImageList
+      ImageIndex = 0
+      OnClick = DepOutBtnClick
+      Spacing = 0
+      TabOrder = 3
+    end
+    object PredInBtn: TBitBtn[13]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideLeft.Side = asrCenter
+      AnchorSideTop.Control = DepOutBtn
+      AnchorSideTop.Side = asrBottom
+      Left = 132
+      Height = 26
+      Top = 93
+      Width = 26
+      BorderSpacing.Top = 20
+      Images = MainDataModule.ImageList
+      ImageIndex = 1
+      OnClick = PredInBtnClick
+      Spacing = 0
+      TabOrder = 4
+    end
+    object PredOutBtn: TBitBtn[14]
+      AnchorSideLeft.Control = ParamsPanel
+      AnchorSideLeft.Side = asrCenter
+      AnchorSideTop.Control = PredInBtn
+      AnchorSideTop.Side = asrBottom
+      AnchorSideBottom.Side = asrBottom
+      Left = 132
+      Height = 26
+      Top = 123
+      Width = 26
+      BorderSpacing.Top = 4
+      Images = MainDataModule.ImageList
+      ImageIndex = 0
+      OnClick = PredOutBtnClick
+      Spacing = 0
+      TabOrder = 5
+    end
+    object Label2: TLabel[15]
+      AnchorSideLeft.Control = DepVarEdit
+      AnchorSideTop.Control = DepInBtn
+      AnchorSideBottom.Control = DepVarEdit
+      Left = 164
+      Height = 15
+      Top = 17
+      Width = 152
+      Caption = 'Selected Dependent Variable:'
+      ParentColor = False
+    end
+    object Label3: TLabel[16]
+      AnchorSideLeft.Control = PredList
+      AnchorSideTop.Control = PredInBtn
+      Left = 164
+      Height = 15
+      Top = 93
+      Width = 147
+      Caption = 'Selected Predictor Variables:'
+      ParentColor = False
+    end
+    object DepVarEdit: TEdit[17]
+      AnchorSideLeft.Control = DepInBtn
+      AnchorSideLeft.Side = asrBottom
+      AnchorSideTop.Control = Label2
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = ParamsPanel
+      AnchorSideRight.Side = asrBottom
+      AnchorSideBottom.Side = asrBottom
+      Left = 164
+      Height = 23
+      Top = 34
+      Width = 127
+      Anchors = [akTop, akLeft, akRight]
+      BorderSpacing.Left = 6
+      BorderSpacing.Top = 2
+      ReadOnly = True
+      TabOrder = 2
+      Text = 'DepVarEdit'
+    end
+    object PredList: TListBox[18]
+      AnchorSideLeft.Control = PredInBtn
+      AnchorSideLeft.Side = asrBottom
+      AnchorSideTop.Control = Label3
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = ParamsPanel
+      AnchorSideRight.Side = asrBottom
+      AnchorSideBottom.Control = Bevel3
+      Left = 164
+      Height = 42
+      Top = 110
+      Width = 127
+      Anchors = [akTop, akLeft, akRight, akBottom]
+      BorderSpacing.Left = 6
+      BorderSpacing.Top = 2
+      ItemHeight = 0
+      MultiSelect = True
+      OnDblClick = PredListDblClick
+      OnSelectionChange = VarListSelectionChange
+      TabOrder = 6
+    end
+    object Bevel1: TBevel[19]
+      AnchorSideLeft.Control = VarList
+      AnchorSideLeft.Side = asrCenter
+      AnchorSideTop.Control = VarList
+      AnchorSideTop.Side = asrBottom
+      Left = 59
+      Height = 28
+      Top = 152
+      Width = 8
+      Shape = bsSpacer
+    end
+    object Bevel3: TBevel[20]
+      AnchorSideTop.Control = ParamsPanel
+      AnchorSideTop.Side = asrCenter
+      Left = 8
+      Height = 8
+      Top = 152
+      Width = 40
+      Shape = bsSpacer
+    end
   end
-  object Label2: TLabel
-    AnchorSideLeft.Control = DepVar
-    AnchorSideTop.Control = DepInBtn
-    AnchorSideBottom.Control = DepVar
-    Left = 202
-    Height = 15
-    Top = 25
-    Width = 152
-    Caption = 'Selected Dependent Variable:'
-    ParentColor = False
-  end
-  object Label3: TLabel
-    AnchorSideLeft.Control = PredList
-    AnchorSideTop.Control = DepOutBtn
-    AnchorSideTop.Side = asrBottom
-    Left = 203
-    Height = 15
-    Top = 93
-    Width = 144
-    BorderSpacing.Top = 8
-    Caption = 'Selected Predictor Variables'
-    ParentColor = False
-  end
-  object Label4: TLabel
-    AnchorSideLeft.Control = PartList
-    AnchorSideTop.Control = PartInBtn
-    AnchorSideTop.Side = asrBottom
-    AnchorSideBottom.Control = PartList
-    Left = 8
-    Height = 15
-    Top = 239
-    Width = 121
-    BorderSpacing.Top = 8
-    BorderSpacing.Bottom = 2
-    Caption = 'Variables Partialed Out:'
-    ParentColor = False
-  end
-  object VarList: TListBox
-    AnchorSideLeft.Control = Owner
-    AnchorSideTop.Control = Label1
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = DepInBtn
-    AnchorSideBottom.Control = Bevel3
-    Left = 8
-    Height = 170
-    Top = 25
-    Width = 150
-    Anchors = [akTop, akLeft, akRight, akBottom]
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 2
-    BorderSpacing.Right = 8
-    ItemHeight = 0
-    MultiSelect = True
-    OnSelectionChange = VarListSelectionChange
-    TabOrder = 0
-  end
-  object DepInBtn: TBitBtn
-    AnchorSideLeft.Control = Owner
-    AnchorSideLeft.Side = asrCenter
-    AnchorSideTop.Control = VarList
-    Left = 166
-    Height = 28
-    Top = 25
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-  object DepOutBtn: TBitBtn
-    AnchorSideLeft.Control = Owner
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-    Left = 166
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-  object PredInBtn: TBitBtn
-    AnchorSideLeft.Control = Owner
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-      FF00FFFFFF0068C774DB65C371F7FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
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-      FF00FFFFFF0068C7740668C774BBFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00
-    }
-    Images = MainDataModule.ImageList
-    ImageIndex = 0
-    OnClick = PredOutBtnClick
-    Spacing = 0
-    TabOrder = 5
-  end
-  object PartInBtn: TBitBtn
-    AnchorSideTop.Control = VarList
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = Bevel1
-    AnchorSideBottom.Control = Label4
-    Left = 51
-    Height = 28
-    Top = 203
-    Width = 28
-    Anchors = [akTop, akRight]
-    BorderSpacing.Top = 8
-    Glyph.Data = {
-      36040000424D3604000000000000360000002800000010000000100000000100
-      2000000000000004000064000000640000000000000000000000FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00256929C4216425C9FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF002D7533CF488F4DFF458C4AFF2265
-      26D1FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF003C8A430638833ED9519957FF79C07EFF76BF7CFF468D
-      4BFF236627DB20622306FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF0042924AB83D8C45F765AD6CFF7DC282FF7AC180FF4B92
-      50FF276D2CF7246828BBFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF0043944B384E9A55FF81C587FF7EC385FF317A
-      36FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0045954CFF85C78CFF82C689FF3682
-      3DFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF004A9E53FF8ACA91FF87C98EFF3C8A
-      43FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0050A659FF8ECC95FF8BCB93FF4292
-      4AFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0056AD5FFF93CF9AFF90CE98FF489A
-      50FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF005BB465FF96D29FFF94D09CFF4EA2
-      57FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF005FBB6AFF9AD4A3FF98D3A1FF53AA
-      5DFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0063C06FFF9ED6A7FF9CD4A5FF59B2
-      63FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0066C572FFA2D8ABFFA0D7A9FF5DB8
-      68FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0068C774FF67C673FF65C270FF62BE
-      6DFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00
-    }
-    Images = MainDataModule.ImageList
-    ImageIndex = 3
-    OnClick = PartInBtnClick
-    Spacing = 0
-    TabOrder = 7
-  end
-  object PartOutBtn: TBitBtn
-    AnchorSideLeft.Control = Bevel1
-    AnchorSideLeft.Side = asrBottom
-    AnchorSideTop.Control = PartInBtn
-    Left = 87
-    Height = 28
-    Top = 203
-    Width = 28
-    Glyph.Data = {
-      36040000424D3604000000000000360000002800000010000000100000000100
-      2000000000000004000064000000640000000000000000000000FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00286E2DFF256929FF216425FF1E60
-      22FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF002D7533FF74BD7AFF72BD78FF2265
-      26FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00337D39FF79C07EFF76BF7CFF266B
-      2BFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0039853FFF7DC282FF7AC180FF2B72
-      30FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF003F8D46FF81C587FF7EC385FF317A
-      36FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0045954CFF85C78CFF82C689FF3682
-      3DFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF004A9E53FF8ACA91FF87C98EFF3C8A
-      43FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0050A659FF8ECC95FF8BCB93FF4292
-      4AFFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0056AD5FFF93CF9AFF90CE98FF489A
-      50FFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF005BB465FF96D29FFF94D09CFF5DAC
-      65FF499C5238FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF0065C371BB62BF6EF779C683FF9AD4A3FF98D3A1FF7DC3
-      86FF4FA458F74A9E53B8FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF0068C7740666C472DB7CCA87FF9ED6A7FF9CD4A5FF73C0
-      7DFF55AC5ED950A65906FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0066C572D17ECA88FF7BC885FF5DB8
-      68CFFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF0067C673C965C270C4FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
-      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00
-    }
-    Images = MainDataModule.ImageList
-    ImageIndex = 2
-    OnClick = PartOutBtnClick
-    Spacing = 0
-    TabOrder = 8
-  end
-  object DepVar: TEdit
-    AnchorSideLeft.Control = DepInBtn
-    AnchorSideLeft.Side = asrBottom
-    AnchorSideTop.Control = Label2
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = Owner
-    AnchorSideRight.Side = asrBottom
-    AnchorSideBottom.Control = DepOutBtn
-    AnchorSideBottom.Side = asrBottom
-    Left = 202
-    Height = 23
-    Top = 42
-    Width = 151
-    Anchors = [akTop, akLeft, akRight]
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 2
-    BorderSpacing.Right = 8
-    ReadOnly = True
-    TabOrder = 3
-    Text = 'DepVar'
-  end
-  object PredList: TListBox
-    AnchorSideLeft.Control = PredInBtn
-    AnchorSideLeft.Side = asrBottom
-    AnchorSideTop.Control = Label3
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = Owner
-    AnchorSideRight.Side = asrBottom
-    AnchorSideBottom.Control = Bevel3
-    Left = 203
-    Height = 85
-    Top = 110
-    Width = 150
-    Anchors = [akTop, akLeft, akRight, akBottom]
-    BorderSpacing.Left = 9
-    BorderSpacing.Top = 2
-    BorderSpacing.Right = 8
-    ItemHeight = 0
-    MultiSelect = True
-    OnSelectionChange = VarListSelectionChange
-    TabOrder = 6
-  end
-  object PartList: TListBox
-    AnchorSideLeft.Control = Owner
-    AnchorSideTop.Control = Label4
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = VarList
-    AnchorSideRight.Side = asrBottom
-    AnchorSideBottom.Control = Bevel2
-    Left = 8
-    Height = 93
-    Top = 256
-    Width = 150
-    Anchors = [akTop, akLeft, akRight, akBottom]
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 2
-    ItemHeight = 0
-    MultiSelect = True
-    OnSelectionChange = VarListSelectionChange
-    TabOrder = 9
-  end
-  object ResetBtn: TButton
-    AnchorSideRight.Control = ComputeBtn
-    AnchorSideBottom.Control = Owner
-    AnchorSideBottom.Side = asrBottom
-    Left = 152
-    Height = 25
-    Top = 365
-    Width = 54
-    Anchors = [akRight, akBottom]
-    AutoSize = True
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 8
-    BorderSpacing.Right = 8
-    BorderSpacing.Bottom = 8
-    Caption = 'Reset'
-    OnClick = ResetBtnClick
-    TabOrder = 11
-  end
-  object ComputeBtn: TButton
-    AnchorSideRight.Control = CloseBtn
-    AnchorSideBottom.Control = Owner
-    AnchorSideBottom.Side = asrBottom
-    Left = 214
-    Height = 25
-    Top = 365
-    Width = 76
-    Anchors = [akRight, akBottom]
-    AutoSize = True
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 8
-    BorderSpacing.Right = 8
-    BorderSpacing.Bottom = 8
-    Caption = 'Compute'
-    OnClick = ComputeBtnClick
-    TabOrder = 12
-  end
-  object CloseBtn: TButton
-    AnchorSideRight.Control = Owner
-    AnchorSideRight.Side = asrBottom
-    AnchorSideBottom.Control = Owner
-    AnchorSideBottom.Side = asrBottom
-    Left = 298
-    Height = 25
-    Top = 365
-    Width = 55
-    Anchors = [akRight, akBottom]
-    AutoSize = True
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 8
-    BorderSpacing.Right = 8
-    BorderSpacing.Bottom = 8
-    Caption = 'Close'
-    ModalResult = 11
-    TabOrder = 13
-  end
-  object HelpBtn: TButton
-    Tag = 136
-    AnchorSideRight.Control = ResetBtn
-    AnchorSideBottom.Control = Owner
-    AnchorSideBottom.Side = asrBottom
-    Left = 93
-    Height = 25
-    Top = 365
-    Width = 51
-    Anchors = [akRight, akBottom]
-    AutoSize = True
-    BorderSpacing.Left = 8
-    BorderSpacing.Top = 8
-    BorderSpacing.Right = 8
-    BorderSpacing.Bottom = 8
-    Caption = 'Help'
-    OnClick = HelpBtnClick
-    TabOrder = 10
-  end
-  object Bevel1: TBevel
-    AnchorSideLeft.Control = VarList
-    AnchorSideLeft.Side = asrCenter
-    AnchorSideTop.Control = VarList
-    AnchorSideTop.Side = asrBottom
-    Left = 79
-    Height = 28
-    Top = 195
-    Width = 8
-    Shape = bsSpacer
-  end
-  object Bevel2: TBevel
-    AnchorSideLeft.Control = Owner
-    AnchorSideRight.Control = Owner
-    AnchorSideRight.Side = asrBottom
-    AnchorSideBottom.Control = CloseBtn
-    Left = 0
-    Height = 8
-    Top = 349
-    Width = 361
-    Anchors = [akLeft, akRight, akBottom]
-    Shape = bsBottomLine
-  end
-  object Bevel3: TBevel
-    AnchorSideTop.Control = Owner
-    AnchorSideTop.Side = asrCenter
-    Left = 8
-    Height = 8
-    Top = 195
-    Width = 40
-    Shape = bsSpacer
-  end
-  object Bevel4: TBevel
-    AnchorSideLeft.Control = Owner
-    AnchorSideLeft.Side = asrCenter
-    AnchorSideTop.Control = PredList
-    AnchorSideTop.Side = asrCenter
-    Left = 160
-    Height = 4
-    Top = 150
-    Width = 40
-    Shape = bsSpacer
+  inherited ParamsSplitter: TSplitter
+    Height = 328
   end
 end
diff --git a/applications/lazstats/source/forms/analysis/correlation/partialsunit.pas b/applications/lazstats/source/forms/analysis/correlation/partialsunit.pas
index 050ca1f40..51baab8f2 100644
--- a/applications/lazstats/source/forms/analysis/correlation/partialsunit.pas
+++ b/applications/lazstats/source/forms/analysis/correlation/partialsunit.pas
@@ -1,6 +1,6 @@
 // File for testing: cansas.laz
 // - Selected dependent variable --> jumps
-// - Seleckted predictor variables --> weight
+// - Selected predictor variables --> weight
 // - variables partialed out --> waist, pulse
 
 unit PartialsUnit;
@@ -10,30 +10,23 @@ unit PartialsUnit;
 interface
 
 uses
-  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
-  StdCtrls, Buttons, ExtCtrls,
-  MainUnit, MatrixLib, FunctionsLib, OutputUnit, Globals, ContextHelpUnit;
+  Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls, Buttons, ExtCtrls,
+  MainUnit, MatrixLib, FunctionsLib, Globals, BasicStatsReportFormUnit;
 
 type
 
-  { TPartialsFrm }
+  { TPartialsForm }
 
-  TPartialsFrm = class(TForm)
+  TPartialsForm = class(TBasicStatsReportForm)
     Bevel1: TBevel;
-    Bevel2: TBevel;
     Bevel3: TBevel;
-    Bevel4: TBevel;
     DepInBtn: TBitBtn;
     DepOutBtn: TBitBtn;
-    HelpBtn: TButton;
     PredInBtn: TBitBtn;
     PredOutBtn: TBitBtn;
     PartInBtn: TBitBtn;
     PartOutBtn: TBitBtn;
-    ResetBtn: TButton;
-    ComputeBtn: TButton;
-    CloseBtn: TButton;
-    DepVar: TEdit;
+    DepVarEdit: TEdit;
     Label1: TLabel;
     Label2: TLabel;
     Label3: TLabel;
@@ -41,215 +34,87 @@ type
     PartList: TListBox;
     PredList: TListBox;
     VarList: TListBox;
-    procedure ComputeBtnClick(Sender: TObject);
     procedure DepInBtnClick(Sender: TObject);
     procedure DepOutBtnClick(Sender: TObject);
-    procedure FormActivate(Sender: TObject);
-    procedure FormCreate(Sender: TObject);
-    procedure FormShow(Sender: TObject);
-    procedure HelpBtnClick(Sender: TObject);
     procedure PartInBtnClick(Sender: TObject);
+    procedure PartListDblClick(Sender: TObject);
     procedure PartOutBtnClick(Sender: TObject);
     procedure PredInBtnClick(Sender: TObject);
+    procedure PredListDblClick(Sender: TObject);
     procedure PredOutBtnClick(Sender: TObject);
-    procedure ResetBtnClick(Sender: TObject);
+    procedure VarListDblClick(Sender: TObject);
     procedure VarListSelectionChange(Sender: TObject; {%H-}User: boolean);
-  private
-    { private declarations }
-    FAutoSized: Boolean;
-    procedure UpdateBtnStates;
+
+  protected
+    procedure AdjustConstraints; override;
+    procedure Compute; override;
+    procedure UpdateBtnStates; override;
+    function Validate(out AMsg: String; out AControl: TWinControl): Boolean; override;
+
   public
-    { public declarations }
+    constructor Create(AOwner: TComponent); override;
+    procedure Reset; override;
   end; 
 
 var
-  PartialsFrm: TPartialsFrm;
+  PartialsForm: TPartialsForm;
 
 implementation
 
+{$R *.lfm}
+
 uses
   Math,
   Utils, MathUnit;
 
-{ TPartialsFrm }
 
-procedure TPartialsFrm.ResetBtnClick(Sender: TObject);
+{ TPartialsForm }
+
+constructor TPartialsForm.Create(AOwner: TComponent);
+begin
+  inherited;
+end;
+
+
+procedure TPartialsForm.AdjustConstraints;
+begin
+  inherited;
+  ParamsPanel.Constraints.MinHeight := (PredOutBtn.Top + PredOutBtn.Height) * 2;
+  ParamsPanel.Constraints.MinWidth := Max(
+    4*CloseBtn.Width + 3*CloseBtn.BorderSpacing.Left,
+    MaxValue([Label1.Width, Label2.Width, Label3.Width, Label4.Width]) * 2 +
+      DepInBtn.Width + VarList.BorderSpacing.Right*2);
+end;
+
+
+procedure TPartialsForm.Compute;
 var
-  i: integer;
-begin
-  DepVar.Text := '';
-  VarList.Clear;
-  PartList.Clear;
-  PredList.Clear;
-  for i := 1 to OS3MainFrm.DataGrid.ColCount - 1 do
-    VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
-  UpdateBtnStates;
-end;
-
-procedure TPartialsFrm.FormActivate(Sender: TObject);
-var
-  w: Integer;
-begin
-  if FAutoSized then
-    exit;
-
-  w := MaxValue([HelpBtn.Width, ResetBtn.Width, ComputeBtn.Width, CloseBtn.Width]);
-  HelpBtn.Constraints.MinWidth := w;
-  ResetBtn.Constraints.MinWidth := w;
-  ComputeBtn.Constraints.MinWidth := w;
-  CloseBtn.Constraints.MinWidth := w;
-
-  w := 2 * Max(Label2.Width, Label3.Width) + DepInBtn.Width + 4 * VarList.BorderSpacing.Left;
-  Constraints.MinWidth := w; //Max(Width, w);
-  Constraints.MinHeight := Height;
-
-  FAutoSized := true;
-end;
-
-procedure TPartialsFrm.FormCreate(Sender: TObject);
-begin
-  Assert(OS3MainFrm <> nil);
-end;
-
-procedure TPartialsFrm.FormShow(Sender: TObject);
-begin
-  ResetBtnClick(self);
-end;
-
-procedure TPartialsFrm.HelpBtnClick(Sender: TObject);
-begin
-  if ContextHelpForm = nil then
-    Application.CreateForm(TContextHelpForm, ContextHelpForm);
-  ContextHelpForm.HelpMessage((Sender as TButton).tag);
-end;
-
-procedure TPartialsFrm.PartInBtnClick(Sender: TObject);
-var
-  i: integer;
-begin
-  i := 0;
-  while i < VarList.Items.Count do
-  begin
-    if VarList.Selected[i] then
-    begin
-      PartList.Items.Add(VarList.Items[i]);
-      VarList.Items.Delete(i);
-      i := 0;
-    end else
-      i := i + 1;
-  end;
-  UpdateBtnStates;
-end;
-
-procedure TPartialsFrm.PartOutBtnClick(Sender: TObject);
-var
-  i: integer;
-begin
-  i := 0;
-  while i < PartList.Items.Count do
-  begin
-    if PartList.Selected[i] then
-    begin
-      VarList.Items.Add(PartList.Items[i]);
-      PartList.Items.Delete(i);
-      i := 0;
-    end else
-      i := i + 1;
-  end;
-  UpdateBtnStates;
-end;
-
-procedure TPartialsFrm.PredInBtnClick(Sender: TObject);
-var
-  i: integer;
-begin
-  i := 0;
-  while i < VarList.Items.Count do
-  begin
-    if VarList.Selected[i] then
-    begin
-      PredList.Items.Add(VarList.Items[i]);
-      VarList.Items.Delete(i);
-      i := 0;
-    end else
-      i := i + 1;
-  end;
-  UpdateBtnStates;
-end;
-
-procedure TPartialsFrm.PredOutBtnClick(Sender: TObject);
-var
-  i: integer;
-begin
-  i := 0;
-  while i < PredList.Items.Count do
-  begin
-    if PredList.Selected[i] then
-    begin
-      VarList.Items.Add(PredList.Items[i]);
-      PredList.Items.Delete(i);
-      i := 0;
-    end else
-      i := i + 1;
-  end;
-  UpdateBtnStates;
-end;
-
-procedure TPartialsFrm.DepInBtnClick(Sender: TObject);
-var
-  index: integer;
-begin
-  index := VarList.ItemIndex;
-  if (index > -1) and (DepVar.Text = '') then
-  begin
-    DepVar.Text := VarList.Items[index];
-    VarList.Items.Delete(index);
-    UpdateBtnStates;
-  end;
-end;
-
-procedure TPartialsFrm.DepOutBtnClick(Sender: TObject);
-begin
-  if DepVar.Text <> '' then
-  begin
-    VarList.Items.Add(DepVar.Text);
-    DepVar.Text := '';
-    UpdateBtnStates;
-  end;
-end;
-
-procedure TPartialsFrm.ComputeBtnClick(Sender: TObject);
-var
-  rmatrix, workmat: DblDyneMat;
-  Means, Variances, StdDevs, W: DblDyneVec;
+  rMatrix: DblDyneMat = nil;
+  workMat: DblDyneMat = nil;
+  Means: DblDyneVec = nil;
+  Variances: DblDyneVec = nil;
+  StdDevs: DblDyneVec = nil;
+  PredVars: IntDyneVec = nil;
+  CntrlVars: IntDyneVec = nil;
+  W: DblDyneVec = nil;
+  MatVars: IntDyneVec = nil;
+  vtimesw: DblDyneMat = nil;
+  W1: DblDyneMat = nil;
+  v: DblDyneMat = nil;
   R2Full, R2Cntrl, SemiPart, Partial, df1, df2, F, Prob: double;
   NoPredVars, NoCntrlVars, DepVarNo, TotNoVars, pcnt, ccnt, count: integer;
-  PredVars, CntrlVars: IntDyneVec;
-  MatVars: IntDyneVec;
   varstring: string;
   i, j, K, L: integer;
-  errorcode: boolean;
-  vtimesw, W1, v: DblDyneMat;
+  errorcode: boolean = false;
   lReport: TStrings;
 
 begin
   DepVarNo := 1;
   errorcode := false;
 
-  if DepVar.Text = '' then
-  begin
-    MessageDlg('No dependent variable selected.', mtError, [mbOK], 0);
-    exit;
-  end;
-
   // Get no. of predictor and control variables
   NoPredVars := PredList.Items.Count;
   NoCntrlVars := PartList.Items.Count;
-  if (NoPredVars = 0) or (NoCntrlVars = 0) then
-  begin
-    MessageDlg('You must select at least one predictor and one control variable.', mtError, [mbOK], 0);
-    exit;
-  end;
   TotNoVars := NoPredVars + NoCntrlVars + 1;
   count := NoCases;
 
@@ -257,8 +122,8 @@ begin
   SetLength(vtimesw,NoVariables,NoVariables);
   SetLength(v,NoVariables,NoVariables);
   SetLength(W1,NoVariables,NoVariables);
-  SetLength(rmatrix,NoVariables+1,NoVariables+1); // augmented
-  SetLength(workmat,NoVariables+1,NoVariables+1); // augmented
+  SetLength(rmatrix,NoVariables+1,NoVariables+1); // +1: augmented
+  SetLength(workmat,NoVariables+1,NoVariables+1); // +1: augmented
   SetLength(PredVars,NoVariables);
   SetLength(CntrlVars,NoVariables);
   SetLength(Means,NoVariables);
@@ -276,7 +141,7 @@ begin
     pcnt := 1;
     for i := 0 to NoPredVars - 1 do
     begin
-      varstring := PredList.Items.Strings[i];
+      varstring := PredList.Items[i];
       for j := 1 to NoVariables do
       begin
         if varstring = OS3MainFrm.DataGrid.Cells[j,0] then
@@ -289,7 +154,7 @@ begin
     ccnt := 1;
     for i := 0 to NoCntrlVars - 1 do
     begin
-      varstring := PartList.Items.Strings[i];
+      varstring := PartList.Items[i];
       for j := 1 to NoVariables do
       begin
         if varstring = OS3MainFrm.DataGrid.Cells[j,0] then
@@ -299,7 +164,7 @@ begin
           end;
       end;
     end;
-    varstring := DepVar.Text;
+    varstring := DepVarEdit.Text;
     for i := 1 to NoVariables do
       if varstring = OS3MainFrm.DataGrid.Cells[i,0] then DepVarNo := i;
 
@@ -363,6 +228,7 @@ begin
       end;
     end;
     MatInv(workmat, vtimesw, v, W1, NoCntrlVars);
+
     R2Cntrl := 0.0;
     for i := 1 to NoCntrlVars do
     begin
@@ -375,6 +241,7 @@ begin
       end;
       R2Cntrl := R2Cntrl + W[i-1] * rmatrix[0,L-1];
     end;
+
     lReport.Add('Squared Multiple Correlation with control variables: %6.3f', [R2Cntrl]);
     lReport.Add('');
     lReport.Add('Standardized Regression Coefficients:');
@@ -400,47 +267,228 @@ begin
     lReport.Add('   D.F.1                  %8.0f', [df1]);
     lReport.Add('   D.F.2                  %8.0f', [df2]);
 
-    DisplayReport(lReport);
+    FReportFrame.DisplayReport(lReport);
 
   finally
     lReport.Free;
-    MatVars := nil;
-    W := nil;
-    Variances := nil;
-    StdDevs := nil;
-    Means := nil;
-    CntrlVars := nil;
-    PredVars := nil;
-    workmat := nil;
-    rmatrix := nil;
-    v := nil;
-    W1 := nil;
-    vtimesw := nil;
   end;
 end;
 
-procedure TPartialsFrm.UpdateBtnStates;
+
+procedure TPartialsForm.DepInBtnClick(Sender: TObject);
+var
+  index: integer;
+begin
+  index := VarList.ItemIndex;
+  if (index > -1) and (DepVarEdit.Text = '') then
+  begin
+    DepVarEdit.Text := VarList.Items[index];
+    VarList.Items.Delete(index);
+    UpdateBtnStates;
+  end;
+end;
+
+
+procedure TPartialsForm.DepOutBtnClick(Sender: TObject);
+begin
+  if DepVarEdit.Text <> '' then
+  begin
+    VarList.Items.Add(DepVarEdit.Text);
+    DepVarEdit.Text := '';
+    UpdateBtnStates;
+  end;
+end;
+
+
+procedure TPartialsForm.PartInBtnClick(Sender: TObject);
+var
+  i: integer;
+begin
+  i := 0;
+  while i < VarList.Items.Count do
+  begin
+    if VarList.Selected[i] then
+    begin
+      PartList.Items.Add(VarList.Items[i]);
+      VarList.Items.Delete(i);
+      i := 0;
+    end else
+      i := i + 1;
+  end;
+  UpdateBtnStates;
+end;
+
+
+procedure TPartialsForm.PartListDblClick(Sender: TObject);
+var
+  index: Integer;
+begin
+  index := PartList.ItemIndex;
+  if index > -1 then
+  begin
+    VarList.Items.Add(PartList.Items[index]);
+    PartList.Items.Delete(index);
+    UpdateBtnStates;
+  end;
+end;
+
+
+procedure TPartialsForm.PartOutBtnClick(Sender: TObject);
+var
+  i: integer;
+begin
+  i := 0;
+  if PartList.Items.Count = 0 then PartList.Selected[0] := true;
+  while i < PartList.Items.Count do
+  begin
+    if PartList.Selected[i] then
+    begin
+      VarList.Items.Add(PartList.Items[i]);
+      PartList.Items.Delete(i);
+      i := 0;
+    end else
+      i := i + 1;
+  end;
+  UpdateBtnStates;
+end;
+
+
+procedure TPartialsForm.PredInBtnClick(Sender: TObject);
+var
+  i: integer;
+begin
+  i := 0;
+  while i < VarList.Items.Count do
+  begin
+    if VarList.Selected[i] then
+    begin
+      PredList.Items.Add(VarList.Items[i]);
+      VarList.Items.Delete(i);
+      i := 0;
+    end else
+      i := i + 1;
+  end;
+  UpdateBtnStates;
+end;
+
+
+procedure TPartialsForm.PredListDblClick(Sender: TObject);
+var
+  index: Integer;
+begin
+  index := PredList.ItemIndex;
+  if index > -1 then
+  begin
+    VarList.Items.Add(PredList.Items[index]);
+    PredList.Items.Delete(index);
+    UpdateBtnStates;
+  end;
+end;
+
+
+procedure TPartialsForm.PredOutBtnClick(Sender: TObject);
+var
+  i: integer;
+begin
+  i := 0;
+  if PredList.Items.Count = 1 then PredList.Selected[0] := true;
+  while i < PredList.Items.Count do
+  begin
+    if PredList.Selected[i] then
+    begin
+      VarList.Items.Add(PredList.Items[i]);
+      PredList.Items.Delete(i);
+      i := 0;
+    end else
+      i := i + 1;
+  end;
+  UpdateBtnStates;
+end;
+
+
+procedure TPartialsForm.Reset;
+var
+  i: integer;
+begin
+  inherited;
+  DepVarEdit.Clear;
+  PartList.Clear;
+  PredList.Clear;
+  VarList.Clear;
+  for i := 1 to OS3MainFrm.DataGrid.ColCount - 1 do
+    VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
+  UpdateBtnStates;
+end;
+
+
+procedure TPartialsForm.UpdateBtnStates;
 var
   lSelected: Boolean;
 begin
+  inherited;
+	
   lSelected := AnySelected(VarList);
-  DepInBtn.Enabled := lSelected and (DepVar.Text = '');
+  DepInBtn.Enabled := lSelected and (DepVarEdit.Text = '');
   PredInBtn.Enabled := lSelected;
   PartInBtn.Enabled := lSelected;
 
-  DepOutBtn.Enabled := DepVar.Text <> '';
-  PredOutBtn.Enabled := AnySelected(PredList);
-  PartOutBtn.Enabled := AnySelected(Partlist);
+  DepOutBtn.Enabled := DepVarEdit.Text <> '';
+  PredOutBtn.Enabled := AnySelected(PredList) or (PredList.Count = 1);
+  PartOutBtn.Enabled := AnySelected(Partlist) or (PartList.Count = 1);
 end;
 
-procedure TPartialsFrm.VarListSelectionChange(Sender: TObject; User: boolean);
+
+function TPartialsForm.Validate(out AMsg: String; out AControl: TWinControl): Boolean;
+begin
+  Result := false;
+
+  if DepVarEdit.Text = '' then
+  begin
+    AMsg := 'No dependent variable selected.';
+    AControl := VarList;
+    exit;
+  end;
+
+  if (PredList.Items.Count = 0) or (PartList.Items.Count = 0) then
+  begin
+    AMsg := 'You must select at least one predictor and one control variable.';
+    AControl := VarList;
+    exit;
+  end;
+
+  Result := true;
+end;
+
+
+procedure TPartialsForm.VarListDblClick(Sender: TObject);
+var
+  index: Integer;
+  s: String;
+begin
+  index := VarList.ItemIndex;
+  s := VarList.Items[index];
+  if index > -1 then
+  begin
+    if DepVarEdit.Text = '' then
+    begin
+      DepVarEdit.Text := s;
+      VarList.Items.Delete(index);
+      UpdateBtnStates;
+    end else
+    begin
+      PredList.Items.Add(s);
+      Varlist.Items.Delete(index);
+      UpdateBtnStates;
+    end;
+  end;
+end;
+
+
+procedure TPartialsForm.VarListSelectionChange(Sender: TObject; User: boolean);
 begin
   UpdateBtnStates;
 end;
 
 
-initialization
-  {$I partialsunit.lrs}
-
 end.
 
diff --git a/applications/lazstats/source/forms/mainunit.pas b/applications/lazstats/source/forms/mainunit.pas
index a8ee89a90..2f043f913 100644
--- a/applications/lazstats/source/forms/mainunit.pas
+++ b/applications/lazstats/source/forms/mainunit.pas
@@ -563,41 +563,80 @@ implementation
 {$R *.lfm}
 
 uses
-  Utils, BasicStatsFormUnit,
-  OptionsUnit, OutputUnit, LicenseUnit, TransFrmUnit, DescriptiveUnit,
-  FreqUnit, CrossTabUnit, BreakDownUnit, BoxPlotUnit, NormalityUnit, Rot3DUnit,
-  PlotXYUnit, BubblePlotUnit, StemLeafUnit, MultXvsYUnit, OneSampleUnit,
-  TwoCorrsUnit, TwoPropUnit, TtestUnit, BlkAnovaUnit, WithinANOVAUnit,
-  AxSAnovaUnit, ABRAnovaUnit, ANCOVAUNIT, LatinSqrsUnit, RMatUnit, PartialsUnit,
-  AutoCorUnit, CanonUnit, GLMUnit, StepFwdMRUnit, BlkMRegUnit, BackRegUnit,
-  BestRegUnit, SimultRegUnit, CoxRegUnit, LogRegUnit, LinProUnit, DiscrimUnit,
-  FactorUnit, HierarchUnit, PathUnit, LogLinScreenUnit, TwoWayLogLinUnit,
-  ABCLogLinUnit, TestGenUnit, TestScoreUnit, RaschUnit, SuccIntUnit, GuttmanUnit,
-  CompRelUnit, KR21Unit, SpBrUnit, RelChangeUnit, DIFUnit, PolyDIFUnit,
-  ChiSqrUnit, SpearmanUnit, MannWhitUUnit, ExactUnit, ConcordanceUnit,
-  KWAnovaUnit, WilcoxonUnit, CochranQUnit, SignTestUnit, FriedmanUnit,
-  BinomialUnit, KendallTauUnit, KaplanMeierUnit,
+  // General
+  Utils, BasicStatsFormUnit, GridHelpUnit, OutputUnit, LicenseUnit,
+
+  // Comparisons
+  ABCNestedUnit, ABRAnovaUnit, ANCOVAUNIT, AnovaTestsUnit, AxSAnovaUnit,
+  BlkAnovaUnit, BNestAUnit, GLMUnit, LatinSqrsUnit, OneCaseAnovaUnit,
+  TtestUnit, TwoCorrsUnit, TwoPropUnit, WithinANOVAUnit,
+
+  // Cross-classification
+  ABCLogLinUnit, LogLinScreenUnit, TwoWayLogLinUnit,
+
+  // Descriptive
+  BoxPlotUnit, BreakDownUnit, BubblePlotUnit, CompareDistUnit, CrossTabUnit,
+  DescriptiveUnit, FreqUnit, GroupFreqUnit, MultXvsYUnit, NormalityUnit,
+  PlotXYUnit, ResistanceLineUnit, Rot3DUnit, SmoothDataUnit, StemLeafUnit,
+  XvsMultYUnit,
+
+  // Financial
+  DblDeclineUnit, LoanItUnit, SLDUnit, SumYrsDepUnit,
+
+  // Correlations
+  RMatUnit, PartialsUnit, AutoCorUnit, CanonUnit,
+
+  // Help
+  AboutUnit,
+
+  // Matrix manuipulation
+  matmanunit,
+
+  // Measurement
+  CompRelUnit, DIFUnit, gradebookunit, GuttmanUnit, KR21Unit, PolyDIFUnit,
+  RaschUnit, RelChangeUnit, SpBrUnit, SuccIntUnit, TestGenUnit, TestScoreUnit,
+
+  // Multiple Regression
+  BackRegUnit, BestRegUnit, BlkMRegUnit, CoxRegUnit, LinProUnit, LSMRunit,
+  SimultRegUnit, StepFwdMRUnit, TwoSLSUnit, WLSUnit,
+
+  // Multivariate
+  AvgLinkUnit, BartlettTestUnit, CorrespondenceUnit, DiscrimUnit, FactorUnit,
+  HierarchUnit, kmeansunit,  MedianPolishUnit, PathUnit,
+  SingleLinkUnit,
+
+  // Nonparametric
+  BinomialUnit, ChiSqrUnit, CochranQUnit, ConcordanceUnit, ExactUnit,
+  FriedmanUnit, GenKappaUnit, KaplanMeierUnit, KappaUnit, KendallTauUnit,
+  KWAnovaUnit, LifeTableUnit, MannWhitUUnit, RIDITUnit, RunsTestUnit, SensUnit,
+  SignTestUnit, SimpleChiSqrUnit, SpearmanUnit, SRHTestUnit, WilcoxonUnit,
+
+  // One-sample tests
+  OneSampleUnit,
+
+  // Options
+  OptionsUnit,
+
+  // Simulations
+  CorSimUnit, DistribUnit, ErrorCurvesUnit, FProbUnit, GenRndValsUnit,
+  GenSeqUnit, HyperGeoUnit,  MultGenUnit, PCurvesUnit, ProbChiSqrUnit,
+  ProbSmallerzUnit, ProbzUnit, TprobUnit, TwozProbUnit,
 
   // Statistical process control
   XBarChartUnit, RChartUnit, SChartUnit, CUSUMUnit, CChartUnit,
   PChartUnit, UChartUnit,
 
-  CorSimUnit,
-  ErrorCurvesUnit, PCurvesUnit, DistribUnit, GenSeqUnit, GenRndValsUnit,
-  MultGenUnit, LoanItUnit, SumYrsDepUnit, SLDUnit, DblDeclineUnit,
-  RIDITUnit, TwoSLSUnit, WLSUnit, SortCasesUnit,
-  SelectCasesUnit, GridHelpUnit, RecodeUnit, KappaUnit, AvgLinkUnit, kmeansunit,
-  SingleLinkUnit, GenKappaUnit, CompareDistUnit, matmanunit, gradebookunit,
-  ProbzUnit, ProbSmallerzUnit, TwozProbUnit, InversezUnit, ProbChiSqrUnit,
-  TprobUnit, FProbUnit, HyperGeoUnit, BNestAUnit, ABCNestedUnit, BartlettTestUnit,
-  DataSmoothUnit, GroupFreqUnit, RunsTestUnit, XvsMultYUnit, SensUnit,
-  CorrespondenceUnit, EquationUnit, CalculatorUnit, JPEGUnit, ResistanceLineUnit,
-  MedianPolishUnit, OneCaseAnovaUnit, SmoothDataUnit, SRHTestUnit, AboutUnit,
-  ItemBankingUnit, ANOVATESTSUnit, SimpleChiSqrUnit, LifeTableUnit, LSMRunit;
+  // Tools
+  CalculatorUnit, DataSmoothUnit, JPEGUnit, SelectCasesUnit, SortCasesUnit,
+
+  // Not identified
+  TransFrmUnit, LogRegUnit,
+  RecodeUnit, InversezUnit, EquationUnit, ItemBankingUnit;
 
 const
   HELP_KEYWORD_PREFIX = 'html';
 
+
 { TOS3MainFrm }
 
 procedure TOS3MainFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
@@ -729,11 +768,12 @@ end;
 // Menu "Correlation" > "Partial, Semipartial"
 procedure TOS3MainFrm.mnuAnalysisCorrel_PartialClick(Sender: TObject);
 begin
-  if PartialsFrm = nil then
-    Application.CreateForm(TPartialsFrm, PartialsFrm);
-  PartialsFrm.ShowModal;
+  if PartialsForm = nil then
+    Application.CreateForm(TPartialsForm, PartialsForm);
+  PartialsForm.Show;
 end;
 
+// Menu "Correlation" > "Autocorrelation"
 procedure TOS3MainFrm.mnuAnalysisCorrel_AutoCorrClick(Sender: TObject);
 begin
   if AutoCorrFrm = nil then
@@ -741,6 +781,7 @@ begin
   AutocorrFrm.ShowModal;
 end;
 
+// Menu "Correlation" > "Canonical"
 procedure TOS3MainFrm.mnuAnalysisCorrel_CanonicalClick(Sender: TObject);
 begin
   if CannonFrm = nil then