diff --git a/icons/other/case.png b/icons/other/case.png
new file mode 100644
index 00000000..4b3f39ec
Binary files /dev/null and b/icons/other/case.png differ
diff --git a/lazproj/coedit.lpi b/lazproj/coedit.lpi
index ae1a21a0..47c740d1 100644
--- a/lazproj/coedit.lpi
+++ b/lazproj/coedit.lpi
@@ -13,7 +13,7 @@
         <DpiAware Value="True"/>
       </XPManifest>
       <Icon Value="0"/>
-      <Resources Count="83">
+      <Resources Count="84">
         <Resource_0 FileName="../icons/window/layout_add.png" Type="RCDATA" ResourceName="LAYOUT_ADD"/>
         <Resource_1 FileName="../icons/window/layout.png" Type="RCDATA" ResourceName="LAYOUT"/>
         <Resource_2 FileName="../icons/window/application_go.png" Type="RCDATA" ResourceName="APPLICATION_GO"/>
@@ -97,6 +97,7 @@
         <Resource_80 FileName="../icons/arrow/arrow_redo.png" Type="RCDATA" ResourceName="ARROW_REDO"/>
         <Resource_81 FileName="../icons/arrow/arrow_pen.png" Type="RCDATA" ResourceName="ARROW_PEN"/>
         <Resource_82 FileName="../icons/arrow/arrow_down.png" Type="RCDATA" ResourceName="ARROW_DOWN"/>
+        <Resource_83 FileName="../icons/other/case.png" Type="RCDATA" ResourceName="CASE"/>
       </Resources>
     </General>
     <i18n>
diff --git a/src/ce_editor.lfm b/src/ce_editor.lfm
index c92e7841..7038176d 100644
--- a/src/ce_editor.lfm
+++ b/src/ce_editor.lfm
@@ -12,14 +12,14 @@ inherited CEEditorWidget: TCEEditorWidget
     ClientHeight = 434
     ClientWidth = 465
     inherited Content: TPanel
-      Height = 434
+      Height = 398
       Width = 465
-      ClientHeight = 434
+      ClientHeight = 398
       ClientWidth = 465
       object editorStatus: TStatusBar[0]
         Left = 0
         Height = 20
-        Top = 412
+        Top = 376
         Width = 465
         AutoSize = False
         BorderSpacing.Bottom = 2
@@ -45,6 +45,9 @@ inherited CEEditorWidget: TCEEditorWidget
         UseSystemFont = False
       end
     end
+    inherited toolbar: TCEToolBar
+      Width = 457
+    end
   end
   inherited contextMenu: TPopupMenu
     left = 24
@@ -86,6 +89,9 @@ inherited CEEditorWidget: TCEEditorWidget
       Caption = 'Redo'
       OnClick = mnuedRedoClick
     end
+    object MenuItem11: TMenuItem
+      Caption = '-'
+    end
     object mnuedPrev: TMenuItem
       Caption = 'Previous location'
       OnClick = mnuedPrevClick
@@ -94,6 +100,28 @@ inherited CEEditorWidget: TCEEditorWidget
       Caption = 'Next location'
       OnClick = mnuedNextClick
     end
+    object MenuItem10: TMenuItem
+      Caption = '-'
+    end
+    object mnuedPrevCarea: TMenuItem
+      Caption = 'Previous changed area'
+      OnClick = mnuedPrevCareaClick
+    end
+    object mnuedNextCarea: TMenuItem
+      Caption = 'Next changed area'
+      OnClick = mnuedNextCareaClick
+    end
+    object MenuItem9: TMenuItem
+      Caption = '-'
+    end
+    object mnuedUpcase: TMenuItem
+      Caption = 'Upper case selection'
+      OnClick = mnuedUpcaseClick
+    end
+    object mnuedLowcase: TMenuItem
+      Caption = 'Lower case selection'
+      OnClick = mnuedLowcaseClick
+    end
     object MenuItem7: TMenuItem
       Caption = '-'
     end
diff --git a/src/ce_editor.pas b/src/ce_editor.pas
index ecde1887..6a0cbee4 100644
--- a/src/ce_editor.pas
+++ b/src/ce_editor.pas
@@ -9,7 +9,7 @@ uses
   ComCtrls, SynEditHighlighter, ExtCtrls, Menus, SynMacroRecorder, dialogs,
   SynPluginSyncroEdit, SynEdit, SynHighlighterMulti, ce_dialogs,
   ce_widget, ce_interfaces, ce_synmemo, ce_dlang, ce_common, ce_dcd, ce_observer,
-  ce_sharedres, ce_controls, ce_writableComponent;
+  ce_sharedres, ce_controls, ce_writableComponent, ce_dsgncontrols;
 
 type
 
@@ -53,11 +53,18 @@ type
 
   TCEEditorWidget = class(TCEWidget, ICEMultiDocObserver, ICEMultiDocHandler, ICEProjectObserver)
     MenuItem1: TMenuItem;
+    MenuItem10: TMenuItem;
+    MenuItem11: TMenuItem;
+    mnuedNextCarea: TMenuItem;
+    mnuedPrevCarea: TMenuItem;
+    mnuedLowcase: TMenuItem;
+    mnuedUpcase: TMenuItem;
     MenuItem2: TMenuItem;
     MenuItem3: TMenuItem;
     MenuItem5: TMenuItem;
     MenuItem6: TMenuItem;
     MenuItem8: TMenuItem;
+    MenuItem9: TMenuItem;
     mnuedRename: TMenuItem;
     mnuedInvAllNone: TMenuItem;
     mnuedComm: TMenuItem;
@@ -76,6 +83,10 @@ type
     macRecorder: TSynMacroRecorder;
     editorStatus: TStatusBar;
     mnuEditor: TPopupMenu;
+    procedure mnuedNextCareaClick(Sender: TObject);
+    procedure mnuedPrevCareaClick(Sender: TObject);
+    procedure mnuedLowcaseClick(Sender: TObject);
+    procedure mnuedUpcaseClick(Sender: TObject);
     procedure MenuItem5Click(Sender: TObject);
     procedure MenuItem6Click(Sender: TObject);
     procedure MenuItem8Click(Sender: TObject);
@@ -299,6 +310,10 @@ begin
   AssignPng(mnuedNext.Bitmap, 'GO_NEXT');
   AssignPng(mnuedPrev.Bitmap, 'GO_PREVIOUS');
   AssignPng(mnuedRename.Bitmap, 'PENCIL');
+  AssignPng(mnuedUpcase.Bitmap, 'CASE');
+  AssignPng(mnuedLowcase.Bitmap, 'CASE');
+  AssignPng(mnuedNextCarea.Bitmap, 'GO_NEXT');
+  AssignPng(mnuedPrevCarea.Bitmap, 'GO_PREVIOUS');
   //
   EntitiesConnector.addObserver(self);
   EntitiesConnector.addSingleService(self);
@@ -814,6 +829,31 @@ begin
   end;
 end;
 
+procedure TCEEditorWidget.mnuedUpcaseClick(Sender: TObject);
+begin
+  //TODO-ceditor: case-related commands are not implemented in synedit
+  if fDoc.isNotNil then
+    fDoc.ExecuteCommand(ecLowerCaseBlock, #0, nil);
+end;
+
+procedure TCEEditorWidget.mnuedLowcaseClick(Sender: TObject);
+begin
+  if fDoc.isNotNil then
+    fDoc.ExecuteCommand(ecUpperCaseBlock, #0, nil);
+end;
+
+procedure TCEEditorWidget.mnuedNextCareaClick(Sender: TObject);
+begin
+  if fDoc.isNotNil then
+    fDoc.nextChangedArea;
+end;
+
+procedure TCEEditorWidget.mnuedPrevCareaClick(Sender: TObject);
+begin
+  if fDoc.isNotNil then
+    fDoc.previousChangedArea;
+end;
+
 procedure TCEEditorWidget.MenuItem8Click(Sender: TObject);
 var
   str: TStringList;
diff --git a/src/ce_messages.pas b/src/ce_messages.pas
index 13854809..753ac3e8 100644
--- a/src/ce_messages.pas
+++ b/src/ce_messages.pas
@@ -313,6 +313,8 @@ begin
   fBtns[amcMisc]:= btnSelMisc;
   fBtns[amcProj]:= btnSelProj;
   //
+  // reminder: a tollbar button can be used here because it would have the
+  // same size as the buttons used to select a category.
   btnClearCat.OnClick := @actClearCurCatExecute;
   AssignPng(btnClearCat, 'CLEAN');
   //
diff --git a/src/ce_synmemo.pas b/src/ce_synmemo.pas
index 018f67c4..6b36f46f 100644
--- a/src/ce_synmemo.pas
+++ b/src/ce_synmemo.pas
@@ -175,6 +175,7 @@ type
     procedure showCallTips(const tips: string);
     function lexCanCloseBrace: boolean;
     procedure handleStatusChanged(Sender: TObject; Changes: TSynStatusChanges);
+    procedure gotoToChangedArea(next: boolean);
   protected
     procedure DoEnter; override;
     procedure DoExit; override;
@@ -211,6 +212,8 @@ type
     procedure showDDocs;
     procedure hideDDocs;
     procedure ShowPhobosDoc;
+    procedure nextChangedArea;
+    procedure previousChangedArea;
     procedure copy;
     //
     function breakPointsCount: integer;
@@ -263,6 +266,8 @@ const
   ecRenameIdentifier    = ecUserFirst + 12;
   ecCommentIdentifier   = ecUserFirst + 13;
   ecShowPhobosDoc       = ecUserFirst + 14;
+  ecPreviousChangedArea = ecUserFirst + 15;
+  ecNextChangedArea     = ecUserFirst + 16;
 
 var
   D2Syn: TSynD2Syn;     // used as model to set the options when no editor exists.
@@ -753,6 +758,8 @@ begin
     AddKey(ecRenameIdentifier, VK_F2, [], 0, []);
     AddKey(ecCommentIdentifier, 0, [], 0, []);
     AddKey(ecShowPhobosDoc, VK_F1, [], 0, []);
+    AddKey(ecPreviousChangedArea, VK_UP, [ssAlt], 0, []);
+    AddKey(ecNextChangedArea, VK_DOWN, [ssAlt], 0, []);
   end;
 end;
 
@@ -773,6 +780,8 @@ begin
     'ecRenameIdentifier':   begin Int := ecRenameIdentifier; exit(true); end;
     'ecCommentIdentifier':  begin Int := ecCommentIdentifier; exit(true); end;
     'ecShowPhobosDoc':      begin Int := ecShowPhobosDoc; exit(true); end;
+    'ecNextChangedArea':    begin Int := ecNextChangedArea; exit(true); end;
+    'ecPreviousChangedArea':begin Int := ecPreviousChangedArea; exit(true); end;
     else exit(false);
   end;
 end;
@@ -794,6 +803,8 @@ begin
     ecRenameIdentifier:   begin Ident := 'ecRenameIdentifier'; exit(true); end;
     ecCommentIdentifier:  begin Ident := 'ecCommentIdentifier'; exit(true); end;
     ecShowPhobosDoc:      begin Ident := 'ecShowPhobosDoc'; exit(true); end;
+    ecNextChangedArea:    begin Ident := 'ecNextChangedArea'; exit(true); end;
+    ecPreviousChangedArea:begin Ident := 'ecPreviousChangedArea'; exit(true); end;
     else exit(false);
   end;
 end;
@@ -843,6 +854,10 @@ begin
       commentIdentifier;
     ecShowPhobosDoc:
       ShowPhobosDoc;
+    ecNextChangedArea:
+      gotoToChangedArea(true);
+    ecPreviousChangedArea:
+      gotoToChangedArea(false);
   end;
   if fOverrideColMode and not SelAvail then
   begin
@@ -1223,6 +1238,56 @@ begin
   {$ENDIF}
 end;
 
+procedure TCESynMemo.nextChangedArea;
+begin
+  gotoToChangedArea(true);
+end;
+
+procedure TCESynMemo.previousChangedArea;
+begin
+  gotoToChangedArea(false);
+end;
+
+procedure TCESynMemo.gotoToChangedArea(next: boolean);
+var
+  i: integer;
+  s: TSynLineState;
+  d: integer;
+  b: integer = 0;
+  p: TPoint;
+begin
+  i := CaretY - 1;
+  s := GetLineState(i);
+  case next of
+    true: begin d := 1; b := lines.count-1; end;
+    false:d := -1;
+  end;
+  if i = b then
+    exit;
+  // exit the current area if it's modified
+  while s <> slsNone do
+  begin
+    s := GetLineState(i);
+    if i = b then
+      exit;
+    i += d;
+  end;
+  // find next modified area
+  while s = slsNone do
+  begin
+    s := GetLineState(i);
+    if i = b then
+      break;
+    i += d;
+  end;
+  // goto area beg/end
+  if (s <> slsNone) and (i <> CaretY + 1) then
+  begin
+    p.X:= 1;
+    p.Y:= i + 1 - d;
+    ExecuteCommand(ecGotoXY, #0, @p);
+  end;
+end;
 {$ENDREGION}
 
 {$REGION DDoc & CallTip --------------------------------------------------------}