diff --git a/applications/lazstats/docs/HelpNDoc/LazStats.hnd b/applications/lazstats/docs/HelpNDoc/LazStats.hnd
index 3ea0211a7..cfc751d17 100644
Binary files a/applications/lazstats/docs/HelpNDoc/LazStats.hnd and b/applications/lazstats/docs/HelpNDoc/LazStats.hnd differ
diff --git a/applications/lazstats/docs/chm/LazStats.chm b/applications/lazstats/docs/chm/LazStats.chm
index 7efb50b6d..3d4662839 100644
Binary files a/applications/lazstats/docs/chm/LazStats.chm and b/applications/lazstats/docs/chm/LazStats.chm differ
diff --git a/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.lfm b/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.lfm
index 3104c2c61..8744089a6 100644
--- a/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.lfm
+++ b/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.lfm
@@ -15,90 +15,72 @@ object SpBrFrm: TSpBrFrm
   object ResetBtn: TButton
     AnchorSideTop.Control = Bevel1
     AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = CancelBtn
-    Left = 172
+    AnchorSideRight.Control = ComputeBtn
+    Left = 264
     Height = 25
-    Top = 101
+    Top = 111
     Width = 54
     Anchors = [akTop, akRight]
     AutoSize = True
-    BorderSpacing.Left = 12
+    BorderSpacing.Left = 8
     BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
+    BorderSpacing.Right = 8
     BorderSpacing.Bottom = 8
     Caption = 'Reset'
     OnClick = ResetBtnClick
     TabOrder = 2
   end
-  object CancelBtn: TButton
-    AnchorSideTop.Control = Bevel1
-    AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = ComputeBtn
-    Left = 238
-    Height = 25
-    Top = 101
-    Width = 62
-    Anchors = [akTop, akRight]
-    AutoSize = True
-    BorderSpacing.Left = 12
-    BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
-    BorderSpacing.Bottom = 8
-    Caption = 'Cancel'
-    ModalResult = 2
-    TabOrder = 3
-  end
   object ComputeBtn: TButton
     AnchorSideTop.Control = Bevel1
     AnchorSideTop.Side = asrBottom
-    AnchorSideRight.Control = ReturnBtn
-    Left = 312
+    AnchorSideRight.Control = CloseBtn
+    Left = 326
     Height = 25
-    Top = 101
+    Top = 111
     Width = 76
     Anchors = [akTop, akRight]
     AutoSize = True
-    BorderSpacing.Left = 12
+    BorderSpacing.Left = 8
     BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
+    BorderSpacing.Right = 8
     BorderSpacing.Bottom = 8
     Caption = 'Compute'
     OnClick = ComputeBtnClick
-    TabOrder = 4
+    TabOrder = 3
   end
-  object ReturnBtn: TButton
+  object CloseBtn: TButton
     AnchorSideTop.Control = Bevel1
     AnchorSideTop.Side = asrBottom
     AnchorSideRight.Control = Owner
     AnchorSideRight.Side = asrBottom
-    Left = 400
+    Left = 410
     Height = 25
-    Top = 101
-    Width = 61
+    Top = 111
+    Width = 55
     Anchors = [akTop, akRight]
     AutoSize = True
-    BorderSpacing.Left = 12
+    BorderSpacing.Left = 8
     BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
+    BorderSpacing.Right = 8
     BorderSpacing.Bottom = 8
-    Caption = 'Return'
-    ModalResult = 1
-    TabOrder = 5
+    Caption = 'Close'
+    ModalResult = 11
+    TabOrder = 4
   end
   object HelpBtn: TButton
     Tag = 147
     AnchorSideTop.Control = Bevel1
     AnchorSideTop.Side = asrBottom
     AnchorSideRight.Control = ResetBtn
-    Left = 109
+    Left = 205
     Height = 25
-    Top = 101
+    Top = 111
     Width = 51
     Anchors = [akTop, akRight]
     AutoSize = True
-    BorderSpacing.Left = 12
+    BorderSpacing.Left = 8
     BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
+    BorderSpacing.Right = 8
     BorderSpacing.Bottom = 8
     Caption = 'Help'
     OnClick = HelpBtnClick
@@ -109,15 +91,15 @@ object SpBrFrm: TSpBrFrm
     AnchorSideLeft.Side = asrCenter
     AnchorSideTop.Control = Owner
     Left = 120
-    Height = 77
+    Height = 87
     Top = 8
     Width = 233
     AutoSize = True
-    BorderSpacing.Left = 12
+    BorderSpacing.Left = 16
     BorderSpacing.Top = 8
-    BorderSpacing.Right = 12
+    BorderSpacing.Right = 16
     BevelOuter = bvNone
-    ClientHeight = 77
+    ClientHeight = 87
     ClientWidth = 233
     TabOrder = 0
     object Label1: TLabel
@@ -152,7 +134,7 @@ object SpBrFrm: TSpBrFrm
       AnchorSideRight.Control = NewRelEdit
       Left = 21
       Height = 15
-      Top = 58
+      Top = 68
       Width = 129
       Anchors = [akTop, akRight]
       BorderSpacing.Right = 8
@@ -190,23 +172,36 @@ object SpBrFrm: TSpBrFrm
     end
     object NewRelEdit: TEdit
       AnchorSideLeft.Control = OldRelEdit
-      AnchorSideTop.Control = MultKEdit
+      AnchorSideTop.Control = Bevel2
       AnchorSideTop.Side = asrBottom
       AnchorSideRight.Control = Panel1
       AnchorSideRight.Side = asrBottom
       Left = 158
       Height = 23
-      Top = 54
+      Top = 64
       Width = 75
       Alignment = taRightJustify
       Anchors = [akTop, akLeft, akRight]
-      BorderSpacing.Top = 4
+      BorderSpacing.Top = 6
       Font.Style = [fsBold]
       ParentFont = False
       ReadOnly = True
       TabOrder = 2
       Text = 'Edit1'
     end
+    object Bevel2: TBevel
+      AnchorSideLeft.Control = Panel1
+      AnchorSideTop.Control = MultKEdit
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = Panel1
+      AnchorSideRight.Side = asrBottom
+      Left = 0
+      Height = 8
+      Top = 50
+      Width = 233
+      Anchors = [akTop, akLeft, akRight]
+      Shape = bsBottomLine
+    end
   end
   object Bevel1: TBevel
     AnchorSideLeft.Control = Owner
@@ -216,7 +211,7 @@ object SpBrFrm: TSpBrFrm
     AnchorSideRight.Side = asrBottom
     Left = 0
     Height = 8
-    Top = 85
+    Top = 95
     Width = 473
     Anchors = [akTop, akLeft, akRight]
     Shape = bsBottomLine
diff --git a/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.pas b/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.pas
index d9b45ba7b..96f1de932 100644
--- a/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.pas
+++ b/applications/lazstats/source/forms/analysis/measurement_programs/spbrunit.pas
@@ -15,12 +15,12 @@ type
 
   TSpBrFrm = class(TForm)
     Bevel1: TBevel;
+    Bevel2: TBevel;
     HelpBtn: TButton;
     Panel1: TPanel;
     ResetBtn: TButton;
-    CancelBtn: TButton;
     ComputeBtn: TButton;
-    ReturnBtn: TButton;
+    CloseBtn: TButton;
     OldRelEdit: TEdit;
     MultKEdit: TEdit;
     NewRelEdit: TEdit;
@@ -59,11 +59,11 @@ procedure TSpBrFrm.FormActivate(Sender: TObject);
 var
   w: Integer;
 begin
-  w := MaxValue([ResetBtn.Width, CancelBtn.Width, ComputeBtn.Width, ReturnBtn.Width]);
+  w := MaxValue([ResetBtn.Width, ComputeBtn.Width, CloseBtn.Width, HelpBtn.Width]);
+  HelpBtn.Constraints.MinWidth := w;
   ResetBtn.Constraints.MinWidth := w;
-  CancelBtn.Constraints.MinWidth := w;
   ComputeBtn.Constraints.MinWidth := w;
-  ReturnBtn.Constraints.MinWidth := w;
+  CloseBtn.Constraints.MinWidth := w;
 
   Constraints.MaxHeight := Height;
   Constraints.MinHeight := Height;
@@ -78,12 +78,12 @@ procedure TSpBrFrm.HelpBtnClick(Sender: TObject);
 begin
   if ContextHelpForm = nil then
     Application.CreateForm(TContextHelpForm, ContextHelpForm);
-  ContextHelpForm.HelpMessage((Sender as TButton).tag);
+  ContextHelpForm.HelpMessage((Sender as TButton).Tag);
 end;
 
 procedure TSpBrFrm.ComputeBtnClick(Sender: TObject);
 var
-  oldrel, newrel, Factor : double;
+  oldrel, newrel, Factor: double;
 begin
   oldrel := StrToFloat(OldRelEdit.Text);
   Factor := StrToFloat(MultKEdit.Text);