Как добавить текст к закладке?

uses
  ComObj;
 
procedure TForm1.Button1Click(Sender: TObject);
const
  // Word Document to open
  YourWordDocument = 'c:\test\worddoc.doc';
var
  BookmarkName, Doc, R: OleVariant;
begin
  // Start a Word instance
  try
    WordApp := CreateOleObject('Word.Application');
  except
    ShowMessage('Could not start MS Word!');
  end;
  // Open your Word document
  WordApp.Documents.Open(YourWordDocument);
  Doc := WordApp.ActiveDocument;
 
  // name of your bookmark
  BookmarkName := 'MyBookMark';
 
  // Check if bookmark exists
  if Doc.Bookmarks.Exists(BookmarkName) then
  begin
    R := Doc.Bookmarks.Item(BookmarkName).Range;
    // Add text at our bookmark
    R.InsertAfter('Text in bookmark');
    // You make a text formatting like changing its color
    R.Font.Color := clRed;
  end;
 
  // Save your document and quit Word
  if not VarIsEmpty(WordApp) then
  begin
    WordApp.DisplayAlerts := 0;
    WordApp.Documents.Item(1).Save;
    WordApp.Quit;
    BookmarkName := Unassigned;
    R := Unassigned;
    WordApp := Unassigned;
  end;
end;

Взято с Delphi Knowledge Base: https://www.baltsoft.com/