VGroup,
  Child, TitleObject,
    Child, TextObject, MUIA_Text_Contents, "page 1", End,
    Child, TextObject, MUIA_Text_Contents, "page 2", End,
    Child, TextObject, MUIA_Text_Contents, "page 3", End,
  End,

  Child, [page 1 contents],
  Child, [page 2 contents],
  Child, [page 3 contents],
End