There seems to be more new in D5 than I thought:

- idispatch:  oplg.pdf for D5 idispatch-interface

  example:

  var
    Word: Variant;
  begin
    Word := CreateOleObject('Word.Basic');
    Word.FileNew('Normal');
    Word.Insert('Erste Zeile'#13);
    Word.Insert('Zweite Zeile'#13);
    Word.FileSaveAs('c:\temp\test.txt', 3);
  end;

  [...]

  Word.FileSaveAs('test.doc');
  Word.FileSaveAs('test.doc', 6);
  Word.FileSaveAs('test.doc',,,'secret');
  Word.FileSaveAs('test.doc', Password := 'secret');
  Word.FileSaveAs(Password := 'secret', Name := 'test.doc');

  Assignments in function calls? Weird stuff.