diff --git a/cesyms/cesyms.coedit b/cesyms/cesyms.coedit
new file mode 100644
index 00000000..cb42f221
--- /dev/null
+++ b/cesyms/cesyms.coedit
@@ -0,0 +1,24 @@
+object CurrentProject: TCEProject
+  OptionsCollection = <  
+    item
+      name = 'release'
+      outputOptions.inlining = True
+      outputOptions.boundsCheck = offAlways
+      outputOptions.optimizations = True
+      outputOptions.release = True
+      pathsOptions.outputFilename = '..\lazproj\cesyms'
+      preBuildProcess.options = []
+      preBuildProcess.showWindow = swoNone
+      postBuildProcess.options = []
+      postBuildProcess.showWindow = swoNone
+      runOptions.options = []
+      runOptions.showWindow = swoNone
+    end>
+  Sources.Strings = (
+    'cesyms.d'
+  )
+  ConfigurationIndex = 0
+  LibraryAliases.Strings = (
+    'libdparse'
+  )
+end
diff --git a/ceast/ceast.d b/cesyms/cesyms.d
similarity index 58%
rename from ceast/ceast.d
rename to cesyms/cesyms.d
index 76976c03..63d54085 100644
--- a/ceast/ceast.d
+++ b/cesyms/cesyms.d
@@ -1,14 +1,23 @@
-module runnable;
-
-import std.path, std.file;
-import std.stdio;
-import std.d.lexer;
-import std.d.ast;
-import std.d.parser;
+module cesyms;
 
+import std.stdio, std.path, std.file, std.array, std.string;
+import std.d.lexer, std.d.ast, std.d.parser;
+static import std.conv;
 
 interface I{}
 
+alias Int32 = int;
+//alias long Int64;
+
+enum E 
+{
+    e1,
+    e2,
+    e3,
+}
+
+enum {opt1,opt2}
+
 class A
 {
     class AA
@@ -26,26 +35,42 @@ class A
 
 enum SymbolType
 {
-    _alias,
+    _alias,     // X
     _class,     // X
     _enum,      // X
     _function,  // X
     _interface, // X
-    _import,
+    _import,    // X
     _mixin,
     _struct,    // X
     _template,  // X
     _union,     // X
-    _variable 
+    _variable   // X
 }
 
 struct Symbol
 {
-    uint line;
-    uint col;
+    int line;
+    int col;
     string name;
     SymbolType type; 
     Symbol * [] subs;
+    
+    void serialize(ref Appender!string lfmApp)
+    {
+        lfmApp.put("  \r    item\r");
+        
+        lfmApp.put(format("    line = %d\r", line));
+        lfmApp.put(format("    col = %d\r", col));
+        lfmApp.put(format("    name = '%s'\r", name));
+        lfmApp.put(format("    symType = %s\r", type));
+         
+        lfmApp.put("    subs = <");
+        if (subs.length) foreach(Symbol * sub; subs)
+            sub.serialize(lfmApp);
+        lfmApp.put(">\r");
+        lfmApp.put("    end\r");
+    }
 }
 
 void main(string[] args)
@@ -53,7 +78,7 @@ void main(string[] args)
     if (args.length < 2) return;
     auto fname = args[1];
     if (!fname.exists) return;
-    
+
     // load and parse the file
     auto config = LexerConfig(fname, StringBehavior.source, WhitespaceBehavior.include);
     auto source = cast(ubyte[]) read(fname, size_t.max);
@@ -68,11 +93,13 @@ void main(string[] args)
         slb.visit(decl);
     } 
     
+    
+    // TODO-cfeature: Outputs the symbol tree in a format handlable by a Coedit widget
+    
     int level = -1;
     void print(Symbol * s)
     {
-        
-        foreach(i; 0..level) write(".");
+        foreach(i; 0 .. level) write(".");
         level++;
         write(s.name, '\r');
         foreach(ss; s.subs)
@@ -80,16 +107,21 @@ void main(string[] args)
         
         level--;
     }
+    //print(&slb.root);
     
-    print(&slb.root);
-    writeln();
+    auto str = slb.serialize;
     
+    //std.file.write(r"C:\too.txt",cast(ubyte[])str);
+    
+    write(str);
+    stdout.flush;
 }
 
 class SymbolListBuilder : ASTVisitor
 {
     Symbol root;
     Symbol * parent;
+    size_t count;
     
     alias visit = ASTVisitor.visit;
     
@@ -97,11 +129,25 @@ class SymbolListBuilder : ASTVisitor
     
     void resetRoot(){parent = &root;}
     
+    string serialize()
+    {
+        Appender!string lfmApp;
+        lfmApp.reserve(count * 64);
+        
+        lfmApp.put("object TSymbolList\r  symbols = <");
+        foreach(Symbol * sym; root.subs) sym.serialize(lfmApp);
+        lfmApp.put(">\rend\r\n");
+        
+        return lfmApp.data;
+        
+    }
+    
     /// returns a new symbol if the declarator is based on a Token named "name".
     Symbol * addDeclaration(DT)(DT adt)
     {
         static if 
         (
+            is(DT == const(AliasInitializer))       ||
             is(DT == const(ClassDeclaration))       ||
             is(DT == const(Declarator))             ||
             is(DT == const(EnumDeclaration))        ||
@@ -113,8 +159,9 @@ class SymbolListBuilder : ASTVisitor
             
         )
         {
+            count++;
             auto result = new Symbol;
-            result.name = adt.name.text;
+            result.name = adt.name.text.idup;
             result.line = adt.name.line;
             result.col  = adt.name.column;             
             parent.subs ~= result;  
@@ -130,17 +177,21 @@ class SymbolListBuilder : ASTVisitor
         auto newSymbol = addDeclaration(dt);
         newSymbol.type = st;
         //
-        auto previousParent = parent;
-        parent = newSymbol;
-        static if (dig) dt.accept(this);
-        parent = previousParent;       
+        static if (dig)
+        {
+            auto previousParent = parent;
+            scope(exit) parent = previousParent;
+            parent = newSymbol;
+            dt.accept(this);
+        }       
     }
     
-    
-    
-    final override void visit(const AliasDeclaration aliasDeclaration) 
+    final override void visit(const AliasDeclaration decl) 
     { 
-        // IdentifierList
+        // old alias syntax not supported by this.
+        // why is initializers an array ?
+        if (decl.initializers.length == 1)
+            namedVisitorImpl!(AliasInitializer, SymbolType._alias)(decl.initializers[0]);  
     }
      
     final override void visit(const ClassDeclaration decl) 
@@ -150,6 +201,7 @@ class SymbolListBuilder : ASTVisitor
     
     final override void visit(const EnumDeclaration decl) 
     {
+        // TODO-ctest: try to see if what dmd outputs as , "enum member" is handled.
         namedVisitorImpl!(EnumDeclaration, SymbolType._class)(decl);
     }
     
@@ -165,19 +217,32 @@ class SymbolListBuilder : ASTVisitor
     
     final override void visit(const ImportDeclaration decl) 
     {
-        // singlesImp[]  
-        
-        // singleImport.identifierchain.join
-        
-        import std.array;
         foreach(const(SingleImport) si; decl.singleImports)
-            
-            writeln(  si.identifierChain.identifiers[0].text ); 
+        { 
+            if (!si.identifierChain.identifiers.length)
+                continue;
+            //
+            string[] modules;
+            foreach(ident; si.identifierChain.identifiers)
+            {
+                modules ~= ident.text;
+                modules ~= ".";
+            }
+            //
+            count++;
+            auto result = new Symbol;
+            result.name = modules[0..$-1].join;
+            result.line = si.identifierChain.identifiers[0].line;
+            result.col  = si.identifierChain.identifiers[0].column; 
+            result.type = SymbolType._import;            
+            parent.subs ~= result;  
+        }   
     }
     
     final override void visit(const MixinDeclaration decl) 
     {
-        // identifier  
+        // TODO-cfeature: MixinDeclaration, just display the name of the mixed template.
+        // the template might be implemented in another module so their ùeùbrs cant be displayed.
     }
     
     final override void visit(const StructDeclaration decl) 
diff --git a/cesyms/readme.md b/cesyms/readme.md
new file mode 100644
index 00000000..2e3ba8db
--- /dev/null
+++ b/cesyms/readme.md
@@ -0,0 +1,13 @@
+ceSyms
+======
+
+Tool designed to build a symbol tree for a particular D module.
+It's written in D using Coedit. To build it, [libdparse](https://github.com/Hackerpilot/libdparse)
+must be setup in the [libman](https://github.com/BBasile/Coedit/wiki#library-manager-widget) 
+as described in this [tutorial](https://github.com/BBasile/Coedit/wiki#lets-build-a-static-library).
+
+This tool is mandatory to enable the new _Symbol list widget_. 
+If missing, the old _static explorer widget_ still does the same but it's from far less
+efficient since it actually compiles while only the AST is needed.
+
+The new tool does not take the module correctness in account.
\ No newline at end of file
diff --git a/cetodo/a11.tdl.png b/cetodo/a11.tdl.png
deleted file mode 100644
index d0c18d66..00000000
Binary files a/cetodo/a11.tdl.png and /dev/null differ
diff --git a/cetodo/readme.md b/cetodo/readme.md
index b7cfb8a1..3c08b7f8 100644
--- a/cetodo/readme.md
+++ b/cetodo/readme.md
@@ -4,12 +4,4 @@ ceTodo
 Tool designed to analyze the _TODO comments_ in D source files.
 It's written in D using Coedit. To build it, [libdparse](https://github.com/Hackerpilot/libdparse)
 must be setup in the [libman](https://github.com/BBasile/Coedit/wiki#library-manager-widget) 
-as described in this [tutorial](https://github.com/BBasile/Coedit/wiki#lets-build-a-static-library).
-
-alpha 11 preview
-================
-
-![](https://github.com/BBasile/Coedit/blob/master/cetodo/a11.tdl.png)
-
-In the widget, empty categories are auto hidden, items are double click-able.
-Items can only be edited in the source-code.
\ No newline at end of file
+as described in this [tutorial](https://github.com/BBasile/Coedit/wiki#lets-build-a-static-library).
\ No newline at end of file
diff --git a/lazproj/coedit.lpi b/lazproj/coedit.lpi
index 939bf6be..5ff75604 100644
--- a/lazproj/coedit.lpi
+++ b/lazproj/coedit.lpi
@@ -132,7 +132,7 @@
         <PackageName Value="LCL"/>
       </Item6>
     </RequiredPackages>
-    <Units Count="37">
+    <Units Count="38">
       <Unit0>
         <Filename Value="coedit.lpr"/>
         <IsPartOfProject Value="True"/>
@@ -167,6 +167,7 @@
       <Unit6>
         <Filename Value="..\src\ce_dlangutils.pas"/>
         <IsPartOfProject Value="True"/>
+        <UnitName Value="ce_dlangutils"/>
       </Unit6>
       <Unit7>
         <Filename Value="..\src\ce_dmdwrap.pas"/>
@@ -303,6 +304,7 @@
         <ComponentName Value="CEToolsEditorWidget"/>
         <HasResources Value="True"/>
         <ResourceBaseClass Value="Form"/>
+        <UnitName Value="ce_toolseditor"/>
       </Unit27>
       <Unit28>
         <Filename Value="..\src\ce_txtsyn.pas"/>
@@ -358,6 +360,14 @@
         <ResourceBaseClass Value="Frame"/>
         <UnitName Value="ce_shortcutseditor"/>
       </Unit36>
+      <Unit37>
+        <Filename Value="..\src\ce_symlist.pas"/>
+        <IsPartOfProject Value="True"/>
+        <ComponentName Value="CESymbolListWidget"/>
+        <HasResources Value="True"/>
+        <ResourceBaseClass Value="Form"/>
+        <UnitName Value="ce_symlist"/>
+      </Unit37>
     </Units>
   </ProjectOptions>
   <CompilerOptions>
diff --git a/src/ce_main.pas b/src/ce_main.pas
index e28e29cd..f80dc889 100644
--- a/src/ce_main.pas
+++ b/src/ce_main.pas
@@ -12,7 +12,7 @@ uses
   ce_messages, ce_interfaces, ce_editor, ce_projinspect, ce_projconf, ce_search,
   ce_staticexplorer, ce_miniexplorer, ce_libman, ce_libmaneditor, ce_todolist,
   ce_observer, ce_writableComponent, ce_toolseditor, ce_procinput, ce_optionseditor,
-  ce_cdbcmd;
+  ce_cdbcmd, ce_symlist;
 
 type
 
@@ -198,6 +198,7 @@ type
     fPrInpWidg: TCEProcInputWidget;
     fTodolWidg: TCETodoListWidget;
     fOptEdWidg: TCEOptionEditorWidget;
+    fSymlWidg: TCESymbolListWidget;
     //fResWidg: TCEResmanWidget;
     {$IFDEF WIN32}
     fCdbWidg: TCECdbWidget;
@@ -421,6 +422,7 @@ begin
   fPrInpWidg:= TCEProcInputWidget.create(self);
   fTodolWidg:= TCETodoListWidget.create(self);
   fOptEdWidg:= TCEOptionEditorWidget.create(self);
+  fSymlWidg := TCESymbolListWidget.create(self);
   //fResWidg  := TCEResmanWidget.create(self);
 
   getMessageDisplay(fMsgs);
@@ -441,6 +443,7 @@ begin
   fWidgList.addWidget(@fPrInpWidg);
   fWidgList.addWidget(@fTodolWidg);
   fWidgList.addWidget(@fOptEdWidg);
+  fWidgList.addWidget(@fSymlWidg);
   //fWidgList.addWidget(@fResWidg);
 
   {$IFDEF WIN32}
diff --git a/src/ce_symlist.lfm b/src/ce_symlist.lfm
new file mode 100644
index 00000000..9f23150c
--- /dev/null
+++ b/src/ce_symlist.lfm
@@ -0,0 +1,400 @@
+inherited CESymbolListWidget: TCESymbolListWidget
+  Left = 1548
+  Height = 430
+  Top = 457
+  Width = 310
+  Caption = 'Symbol list'
+  ClientHeight = 430
+  ClientWidth = 310
+  inherited Back: TPanel
+    Height = 430
+    Width = 310
+    ClientHeight = 430
+    ClientWidth = 310
+    inherited Content: TPanel
+      Height = 430
+      Width = 310
+      ClientHeight = 430
+      ClientWidth = 310
+      PopupMenu = nil
+      object Tree: TTreeView[0]
+        Left = 4
+        Height = 394
+        Top = 32
+        Width = 302
+        Align = alClient
+        BorderSpacing.Around = 4
+        DefaultItemHeight = 18
+        ExpandSignType = tvestPlusMinus
+        HideSelection = False
+        Images = imgList
+        ReadOnly = True
+        RightClickSelect = True
+        RowSelect = True
+        ScrollBars = ssAutoBoth
+        SelectionColor = clActiveBorder
+        TabOrder = 0
+        OnDeletion = TreeDeletion
+        OnKeyPress = TreeKeyPress
+        Options = [tvoAutoItemHeight, tvoKeepCollapsedNodes, tvoReadOnly, tvoRightClickSelect, tvoRowSelect, tvoShowButtons, tvoShowLines, tvoShowRoot, tvoToolTips, tvoThemedDraw]
+        Items.Data = {
+          F9FFFFFF02000B000000000000000000000000000000FFFFFFFF000000000000
+          00000005000000416C696173010000000100000001000000FFFFFFFF00000000
+          000000000007000000436C6173736573020000000200000002000000FFFFFFFF
+          00000000000000000005000000456E756D73030000000300000003000000FFFF
+          FFFF0000000000000000000800000046756E6374696F6E040000000400000004
+          000000FFFFFFFF00000000000000000007000000496D706F7274730500000005
+          00000005000000FFFFFFFF00000000000000000009000000496E746572666163
+          65060000000600000006000000FFFFFFFF000000000000000000050000004D69
+          78696E070000000700000007000000FFFFFFFF00000000000000000007000000
+          53747275637473080000000800000008000000FFFFFFFF000000000000000000
+          0900000054656D706C61746573000000000000000000000000FFFFFFFF000000
+          00000000000005000000556E696F6E010000000100000001000000FFFFFFFF00
+          0000000000000000080000005661726961626C65
+        }
+        TreeLineColor = 14671839
+        TreeLinePenStyle = psSolid
+      end
+      object Panel1: TPanel[1]
+        Left = 2
+        Height = 26
+        Top = 2
+        Width = 306
+        Align = alTop
+        BorderSpacing.Around = 2
+        BevelOuter = bvNone
+        ClientHeight = 26
+        ClientWidth = 306
+        PopupMenu = contextMenu
+        TabOrder = 1
+        object TreeFilterEdit1: TTreeFilterEdit
+          Left = 32
+          Height = 22
+          Top = 2
+          Width = 272
+          OnAfterFilter = TreeFilterEdit1AfterFilter
+          ButtonWidth = 28
+          NumGlyphs = 1
+          Align = alClient
+          Anchors = [akTop, akLeft, akRight]
+          BorderSpacing.Around = 2
+          MaxLength = 0
+          TabOrder = 0
+          FilteredTreeview = Tree
+        end
+        object btnRefresh: TBitBtn
+          Left = 2
+          Height = 22
+          Hint = 'refresh the list'
+          Top = 2
+          Width = 28
+          Align = alLeft
+          BorderSpacing.Around = 2
+          Layout = blGlyphBottom
+          OnClick = btnRefreshClick
+          Spacing = 0
+          TabOrder = 1
+        end
+      end
+    end
+  end
+  inherited contextMenu: TPopupMenu
+    left = 112
+    top = 48
+  end
+  object imgList: TImageList[2]
+    left = 80
+    top = 48
+    Bitmap = {
+      4C69090000001000000010000000FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF000000000064646497626262FF616161FF626262FF6464649700000000FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00646464976F6E6EFFA6A5A4FFA9A8A9FFA6A5A4FF6D6E6EFF64646497FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00626363FFA7A5A5FF7D7B7AFF787675FF7D7B7AFFA7A5A5FF626363FFFFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00626363FF8E8C8BFF767371FF767371FF767371FF8E8C8BFF626363FFFFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00636464FF858381FF878481FF868381FF878481FF858381FF636464FFFFFF
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+      FF00585858AC6F6E6EFF95918FFF989492FF95918FFF6F6E6EFF585858ACFFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF000000001E585858AC636363FF626263FF636363FF585858AC0000001EFFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00000000000000001E0000003300000033000000330000001E00000000FFFF
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+      FF0000000000B9851C97B78319FFB68217FFB78319FFB9851C9700000000FFFF
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+      FF00B9851C97C6922EFFECC482FFEFC886FFECC482FFC6912CFFB9851C97FFFF
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+      FF00B78319FFEEC684FFE5AA49FFE2A641FFE5AA49FFEEC684FFB78319FFFFFF
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+      FF00B78219FFEBB964FFE3A641FFE3A641FFE3A641FFEBB964FFB78219FFFFFF
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+  end
+end
diff --git a/src/ce_symlist.pas b/src/ce_symlist.pas
new file mode 100644
index 00000000..a8f14d8f
--- /dev/null
+++ b/src/ce_symlist.pas
@@ -0,0 +1,601 @@
+unit ce_symlist;
+
+{$I ce_defines.inc}
+
+interface
+
+uses
+  Classes, SysUtils, TreeFilterEdit, Forms, Controls, Graphics, ExtCtrls, Menus,
+  ComCtrls, ce_widget, jsonparser, process, actnlist, Buttons, Clipbrd,
+  ce_common, ce_observer, ce_synmemo, ce_interfaces, LCLProc;
+
+type
+
+  // Enumerates the possible symbol kind. To be kept in sync with the tool declaration.
+  TSymbolType = (
+      _alias,
+      _class,
+      _enum,
+      _function,
+      _interface,
+      _import,
+      _mixin,
+      _struct,
+      _template,
+      _union,
+      _variable
+  );
+
+  TSymbolCollection = class;
+
+  // Encapsulates a symbol to enable structured serialization
+  TSymbol = class(TCollectionItem)
+  private
+    fline, fCol: integer;
+    fName: string;
+    fType: TSymbolType;
+    fSubs: TSymbolCollection;
+    procedure setSubs(aValue: TSymbolCollection);
+  published
+    property line: Integer read fline write fLine;
+    property col: Integer read fCol write fCol;
+    property name: string read fName write fName;
+    property symType: TSymbolType read fType write fType;
+    property subs: TSymbolCollection read fSubs write setSubs;
+  public
+    constructor Create(ACollection: TCollection); override;
+    destructor destroy; override;
+  end;
+
+  // Encapsulates a ssymbol ub symbols.
+  TSymbolCollection = class(TCollection)
+  private
+    function getSub(index: Integer): TSymbol;
+  public
+    constructor create;
+    property sub[index: Integer]: TSymbol read getSub; default;
+  end;
+
+  // Serializable Symbol list
+  TSymbolList = class(TComponent)
+  private
+    fSymbols: TSymbolCollection;
+    procedure setSymbols(aValue: TSymbolCollection);
+  published
+    property symbols: TSymbolCollection read fSymbols write setSymbols;
+  public
+    constructor create(aOwner: TCOmponent); override;
+    destructor destroy; override;
+    //
+    procedure LoadFromTool(str: TStream);
+  end;
+
+  TCESymbolListWidget = class(TCEWidget, ICEMultiDocObserver)
+    btnRefresh: TBitBtn;
+    imgList: TImageList;
+    Panel1: TPanel;
+    Tree: TTreeView;
+    TreeFilterEdit1: TTreeFilterEdit;
+    procedure btnRefreshClick(Sender: TObject);
+    procedure TreeDeletion(Sender: TObject; Node: TTreeNode);
+    procedure TreeFilterEdit1AfterFilter(Sender: TObject);
+    procedure TreeKeyPress(Sender: TObject; var Key: char);
+  private
+    fSyms: TSymbolList;
+    fMsgs: ICEMessagesDisplay;
+    fToolProc: TCheckedAsyncProcess;
+    fActCopyIdent: TAction;
+    fActRefresh: TAction;
+    fActRefreshOnChange: TAction;
+    fActRefreshOnFocus: TAction;
+    fActAutoRefresh: TAction;
+    fActSelectInSource: TAction;
+    fDoc: TCESynMemo;
+    fAutoRefresh: boolean;
+    fRefreshOnChange: boolean;
+    fRefreshOnFocus: boolean;
+    ndAlias, ndClass, ndEnum, ndFunc, ndUni: TTreeNode;
+    ndImp, ndIntf, ndMix, ndStruct, ndTmp, ndVar: TTreeNode;
+    procedure TreeDblClick(Sender: TObject);
+    procedure actRefreshExecute(Sender: TObject);
+    procedure actAutoRefreshExecute(Sender: TObject);
+    procedure actRefreshOnChangeExecute(Sender: TObject);
+    procedure actRefreshOnFocusExecute(Sender: TObject);
+    procedure actCopyIdentExecute(Sender: TObject);
+    procedure updateVisibleCat;
+    procedure clearTree;
+    //
+    procedure callToolProc;
+    procedure symbolListProduced(sender: TObject);
+    //
+    procedure optget_AutoRefresh(aWriter: TWriter);
+    procedure optset_AutoRefresh(aReader: TReader);
+    procedure optget_RefreshOnChange(aWriter: TWriter);
+    procedure optset_RefreshOnChange(aReader: TReader);
+    procedure optget_RefreshOnFocus(aWriter: TWriter);
+    procedure optset_RefreshOnFocus(aReader: TReader);
+    //
+    procedure docNew(aDoc: TCESynMemo);
+    procedure docClosing(aDoc: TCESynMemo);
+    procedure docFocused(aDoc: TCESynMemo);
+    procedure docChanged(aDoc: TCESynMemo);
+  protected
+    procedure UpdateByDelay; override;
+    //
+    procedure sesoptDeclareProperties(aFiler: TFiler); override;
+    //
+    function contextName: string; override;
+    function contextActionCount: integer; override;
+    function contextAction(index: integer): TAction; override;
+    //
+    procedure SetVisible(Value: boolean); override;
+  published
+    property autoRefresh: boolean read fAutoRefresh write fAutoRefresh;
+    property refreshOnChange: boolean read fRefreshOnChange write fRefreshOnChange;
+    property refreshOnFocus: boolean read fRefreshOnFocus write fRefreshOnFocus;
+  public
+    constructor create(aOwner: TComponent); override;
+    destructor destroy; override;
+  end;
+
+implementation
+{$R *.lfm}
+
+{$REGION Serializable symbols---------------------------------------------------}
+constructor TSymbol.create(ACollection: TCollection);
+begin
+  inherited create(ACollection);
+  fSubs := TSymbolCollection.create;
+end;
+
+destructor TSymbol.destroy;
+begin
+  fSubs.Free;
+  inherited;
+end;
+
+procedure TSymbol.setSubs(aValue: TSymbolCollection);
+begin
+  fSubs.Assign(aValue);
+end;
+
+constructor TSymbolCollection.create;
+begin
+  inherited create(TSymbol);
+end;
+
+function TSymbolCollection.getSub(index: Integer): TSymbol;
+begin
+  exit(TSymbol(self.Items[index]));
+end;
+
+constructor TSymbolList.create(aOwner: TCOmponent);
+begin
+  inherited;
+  fSymbols := TSymbolCollection.create;
+end;
+
+destructor TSymbolList.destroy;
+begin
+  fSymbols.free;
+  inherited;
+end;
+
+procedure TSymbolList.setSymbols(aValue: TSymbolCollection);
+begin
+  fSymbols.Assign(aValue);
+end;
+
+procedure TSymbolList.LoadFromTool(str: TStream);
+var
+  bin: TMemoryStream;
+begin
+  bin := TMemoryStream.Create;
+  try
+    str.Position:=0;
+    ObjectTextToBinary(str, bin);
+    bin.Position:=0;
+    bin.ReadComponent(self);
+  finally
+    bin.Free;
+  end;
+end;
+{$ENDREGION}
+
+{$REGION Standard Comp/Obj------------------------------------------------------}
+constructor TCESymbolListWidget.create(aOwner: TComponent);
+var
+  png: TPortableNetworkGraphic;
+begin
+  fAutoRefresh := false;
+  fRefreshOnFocus := true;
+  fRefreshOnChange := false;
+  //
+  fActCopyIdent := TAction.Create(self);
+  fActCopyIdent.OnExecute:=@actCopyIdentExecute;
+  fActCopyIdent.Caption := 'Copy identifier';
+  fActRefresh := TAction.Create(self);
+  fActRefresh.OnExecute := @actRefreshExecute;
+  fActRefresh.Caption := 'Refresh';
+  fActAutoRefresh := TAction.Create(self);
+  fActAutoRefresh.OnExecute := @actAutoRefreshExecute;
+  fActAutoRefresh.Caption := 'Auto-refresh';
+  fActAutoRefresh.AutoCheck := true;
+  fActAutoRefresh.Checked := fAutoRefresh;
+  fActRefreshOnChange := TAction.Create(self);
+  fActRefreshOnChange.OnExecute := @actRefreshOnChangeExecute;
+  fActRefreshOnChange.Caption := 'Refresh on change';
+  fActRefreshOnChange.AutoCheck := true;
+  fActRefreshOnChange.Checked := fRefreshOnChange;
+  fActRefreshOnFocus := TAction.Create(self);
+  fActRefreshOnFocus.OnExecute := @actRefreshOnFocusExecute;
+  fActRefreshOnFocus.Caption := 'Refresh on focused';
+  fActRefreshOnFocus.AutoCheck := true;
+  fActRefreshOnFocus.Checked := fRefreshOnFocus;
+  fActSelectInSource := TAction.Create(self);
+  fActSelectInSource.OnExecute := @TreeDblClick;
+  fActSelectInSource.Caption := 'Select in source';
+  //
+  inherited;
+  // allow empty name if owner is nil
+  fSyms := TSymbolList.create(nil);
+  //
+  ndAlias   := Tree.Items[0];
+  ndClass   := Tree.Items[1];
+  ndEnum    := Tree.Items[2];
+  ndFunc    := Tree.Items[3];
+  ndImp     := Tree.Items[4];
+  ndIntf    := Tree.Items[5];
+  ndMix     := Tree.Items[6];
+  ndStruct  := Tree.Items[7];
+  ndTmp     := Tree.Items[8];
+  ndUni     := Tree.Items[9];
+  ndVar     := Tree.Items[10];
+  //
+  png := TPortableNetworkGraphic.Create;
+  try
+    png.LoadFromLazarusResource('arrow_update');
+    btnRefresh.Glyph.Assign(png);
+  finally
+    png.Free;
+  end;
+  //
+  Tree.OnDblClick := @TreeDblClick;
+  Tree.PopupMenu := contextMenu;
+  //
+  EntitiesConnector.addObserver(self);
+end;
+
+destructor TCESymbolListWidget.destroy;
+begin
+  EntitiesConnector.removeObserver(self);
+  //
+  killProcess(fToolProc);
+  fSyms.Free;
+  inherited;
+end;
+
+procedure TCESymbolListWidget.SetVisible(Value: boolean);
+begin
+  inherited;
+  getMessageDisplay(fMsgs);
+  if Value then
+    callToolProc;
+end;
+{$ENDREGION}
+
+{$REGION ICESessionOptionsObserver ---------------------------------------------}
+procedure TCESymbolListWidget.optget_AutoRefresh(aWriter: TWriter);
+begin
+  aWriter.WriteBoolean(fAutoRefresh);
+end;
+
+procedure TCESymbolListWidget.optset_AutoRefresh(aReader: TReader);
+begin
+  fAutoRefresh := aReader.ReadBoolean;
+  fActAutoRefresh.Checked := fAutoRefresh;
+end;
+
+procedure TCESymbolListWidget.optget_RefreshOnChange(aWriter: TWriter);
+begin
+  aWriter.WriteBoolean(fRefreshOnChange);
+end;
+
+procedure TCESymbolListWidget.optset_RefreshOnChange(aReader: TReader);
+begin
+  fRefreshOnChange := aReader.ReadBoolean;
+  fActRefreshOnChange.Checked := fRefreshOnChange;
+end;
+
+procedure TCESymbolListWidget.optget_RefreshOnFocus(aWriter: TWriter);
+begin
+  aWriter.WriteBoolean(fRefreshOnFocus);
+end;
+
+procedure TCESymbolListWidget.optset_RefreshOnFocus(aReader: TReader);
+begin
+  fRefreshOnFocus := aReader.ReadBoolean;
+  fActRefreshOnFocus.Checked := fRefreshOnFocus;
+end;
+
+procedure TCESymbolListWidget.sesoptDeclareProperties(aFiler: TFiler);
+begin
+  inherited;
+  aFiler.DefineProperty(Name + '_AutoRefresh', @optset_AutoRefresh, @optget_AutoRefresh, true);
+  aFiler.DefineProperty(Name + '_RefreshOnChange', @optset_RefreshOnChange, @optget_RefreshOnChange, true);
+  aFiler.DefineProperty(Name + '_RefreshOnFocus', @optset_RefreshOnFocus, @optget_RefreshOnFocus, true);
+end;
+{$ENDREGION}
+
+{$REGION ICEContextualActions---------------------------------------------------}
+function TCESymbolListWidget.contextName: string;
+begin
+  result := 'Static explorer';
+end;
+
+function TCESymbolListWidget.contextActionCount: integer;
+begin
+  result := 6;
+end;
+
+function TCESymbolListWidget.contextAction(index: integer): TAction;
+begin
+  case index of
+    0: exit(fActSelectInSource);
+    1: exit(fActCopyIdent);
+    2: exit(fActRefresh);
+    3: exit(fActAutoRefresh);
+    4: exit(fActRefreshOnChange);
+    5: exit(fActRefreshOnFocus);
+    else result := nil;
+  end;
+end;
+
+procedure TCESymbolListWidget.actRefreshExecute(Sender: TObject);
+begin
+  if Updating then exit;
+  callToolProc;
+end;
+
+procedure TCESymbolListWidget.actAutoRefreshExecute(Sender: TObject);
+begin
+  autoRefresh := not autoRefresh;
+end;
+
+procedure TCESymbolListWidget.actRefreshOnChangeExecute(Sender: TObject);
+begin
+  refreshOnChange := not refreshOnChange;
+end;
+
+procedure TCESymbolListWidget.actRefreshOnFocusExecute(Sender: TObject);
+begin
+  refreshOnFocus := not refreshOnFocus;
+end;
+
+procedure TCESymbolListWidget.actCopyIdentExecute(Sender: TObject);
+begin
+  if Tree.Selected = nil then exit;
+  Clipboard.AsText:= Tree.Selected.Text;
+end;
+
+{$ENDREGION}
+
+{$REGION ICEMultiDocObserver ---------------------------------------------------}
+procedure TCESymbolListWidget.docNew(aDoc: TCESynMemo);
+begin
+  fDoc := aDoc;
+  beginUpdateByDelay;
+end;
+
+procedure TCESymbolListWidget.docClosing(aDoc: TCESynMemo);
+begin
+  if fDoc <> aDoc then exit;
+  fDoc := nil;
+  clearTree;
+  updateVisibleCat;
+  beginUpdateByDelay;
+end;
+
+procedure TCESymbolListWidget.docFocused(aDoc: TCESynMemo);
+begin
+  if fDoc = aDoc then exit;
+  fDoc := aDoc;
+  if not Visible then exit;
+  //
+  if fAutoRefresh then beginUpdateByDelay
+  else if fRefreshOnFocus then callToolProc;
+end;
+
+procedure TCESymbolListWidget.docChanged(aDoc: TCESynMemo);
+begin
+  if fDoc <> aDoc then exit;
+  if not Visible then exit;
+  //
+  if fAutoRefresh then beginUpdateByDelay
+  else if fRefreshOnChange then callToolProc;
+end;
+{$ENDREGION}
+
+{$REGION Symbol-tree things ----------------------------------------------------}
+procedure TCESymbolListWidget.UpdateByDelay;
+begin
+  if not fAutoRefresh then exit;
+  callToolProc;
+end;
+
+procedure TCESymbolListWidget.TreeDeletion(Sender: TObject; Node: TTreeNode);
+begin
+  if (node.Data <> nil) then
+    Dispose(PInt64(node.Data));
+end;
+
+procedure TCESymbolListWidget.btnRefreshClick(Sender: TObject);
+begin
+  fActRefresh.Execute;
+end;
+
+procedure TCESymbolListWidget.updateVisibleCat;
+begin
+  if (fDoc <> nil) then
+  begin
+    ndAlias.Visible := ndAlias.Count > 0;
+    ndClass.Visible := ndClass.Count > 0;
+    ndEnum.Visible  := ndEnum.Count > 0;
+    ndFunc.Visible  := ndFunc.Count > 0;
+    ndImp.Visible   := ndImp.Count > 0;
+    ndIntf.Visible  := ndIntf.Count > 0;
+    ndMix.Visible   := ndMix.Count > 0;
+    ndStruct.Visible:= ndStruct.Count > 0;
+    ndTmp.Visible   := ndTmp.Count > 0;
+    ndUni.Visible   := ndUni.Count > 0;
+    ndVar.Visible   := ndVar.Count > 0;
+  end else
+  begin
+    ndAlias.Visible := true;
+    ndClass.Visible := true;
+    ndEnum.Visible  := true;
+    ndFunc.Visible  := true;
+    ndImp.Visible   := true;
+    ndIntf.Visible  := true;
+    ndMix.Visible   := true;
+    ndStruct.Visible:= true;
+    ndTmp.Visible   := true;
+    ndUni.Visible   := true;
+    ndVar.Visible   := true;
+  end;
+end;
+
+procedure TCESymbolListWidget.clearTree;
+begin
+  ndAlias.DeleteChildren;
+  ndClass.DeleteChildren;
+  ndEnum.DeleteChildren;
+  ndFunc.DeleteChildren;
+  ndImp.DeleteChildren;
+  ndIntf.DeleteChildren;
+  ndMix.DeleteChildren;
+  ndStruct.DeleteChildren;
+  ndTmp.DeleteChildren;
+  ndUni.DeleteChildren;
+  ndVar.DeleteChildren;
+end;
+
+procedure TCESymbolListWidget.TreeFilterEdit1AfterFilter(Sender: TObject);
+begin
+  if TreeFilterEdit1.Filter ='' then
+    updateVisibleCat;
+end;
+
+procedure TCESymbolListWidget.TreeKeyPress(Sender: TObject; var Key: char);
+begin
+  if Key = #13 then TreeDblClick(nil);
+end;
+
+procedure TCESymbolListWidget.TreeDblClick(Sender: TObject);
+var
+  line: Int64;
+begin
+  if fDoc = nil then exit;
+  if Tree.Selected = nil then exit;
+  if Tree.Selected.Data = nil then exit;
+  //
+  line := PInt64(Tree.Selected.Data)^;
+  fDoc.CaretY := line;
+  fDoc.SelectLine;
+end;
+
+procedure TCESymbolListWidget.callToolProc;
+var
+  srcFname: string;
+begin
+  if fDoc = nil then exit;
+  if fDoc.Lines.Count = 0 then exit;
+
+  // standard process options
+  killProcess(fToolProc);
+  fToolProc := TCheckedAsyncProcess.Create(nil);
+  fToolProc.ShowWindow := swoHIDE;
+  fToolProc.Options := [poUsePipes];
+  fToolProc.Executable := 'cesyms';
+  fToolProc.OnTerminate := @symbolListProduced;
+  fToolProc.OnReadData  := @symbolListProduced;
+  fToolProc.CurrentDirectory := ExtractFileDir(Application.ExeName);
+
+  // focused source
+  srcFname := fDoc.fileName;
+  if not fileExists(srcFname) or (srcFname = fDoc.tempFilename) then
+    fDoc.saveTempFile;
+  srcFname := fDoc.fileName;
+  fToolProc.Parameters.Add(srcFname);
+
+  fToolProc.Execute;
+end;
+
+procedure TCESymbolListWidget.symbolListProduced(sender: TObject);
+var
+  cnt, sum: Integer;
+  str: TmemoryStream;
+  i: Integer;
+const
+  buffSz = 1024;
+//
+procedure symbolToTreeNode(sym: TSymbol);
+var
+  data: PInt64;
+  cat: TTreeNode;
+  i: Integer;
+begin
+  case sym.symType of
+    _alias    : cat := ndAlias;
+    _class    : cat := ndClass;
+    _enum     : cat := ndEnum;
+    _function : cat := ndFunc;
+    _import   : cat := ndImp;
+    _interface: cat := ndIntf;
+    _mixin    : cat := ndMix;
+    _struct   : cat := ndStruct;
+    _template : cat := ndTmp;
+    _union    : cat := ndUni;
+    _variable : cat := ndVar;
+  end;
+  data := new(PInt64);
+  data^ := sym.fline;
+  tree.Items.AddChildObject(cat, sym.name, data);
+  cat.Visible:=true;
+  //
+  for i := 0 to sym.subs.Count-1 do
+    symbolToTreeNode(sym.subs[i]);
+end;
+//
+begin
+  if ndAlias = nil then exit;
+  clearTree;
+  updateVisibleCat;
+  if fDoc = nil then exit;
+  //
+  sum := 0;
+  str := TMemoryStream.Create;
+  try
+    while fToolProc.Output.NumBytesAvailable <> 0 do begin
+      str.SetSize(sum + buffSz);
+      cnt := fToolProc.Output.Read((str.Memory + sum)^, buffSz);
+      sum += cnt;
+    end;
+    str.SetSize(sum);
+    str.Position := 0;
+    //str.SaveToFile('C:\symlist.txt');
+    fSyms.LoadFromTool(str);
+  finally
+    str.Free;
+  end;
+  fToolProc.OnTerminate := nil;
+  fToolProc.OnReadData  := nil;
+  //
+  tree.BeginUpdate;
+  for i := 0 to fSyms.symbols.Count-1 do
+    symbolToTreeNode(fSyms.symbols[i]);
+  tree.EndUpdate;
+end;
+{$ENDREGION --------------------------------------------------------------------}
+
+end.