eld_value)
    datagroup: list/tuple of (datalist *or* datagroup, title, comment)

    -> one field for each member of a datalist
    -> one tab for each member of a top-level datagroup
    -> one page (of a multipage widget, each page can be selected with a combo
       box) for each member of a datagroup inside a datagroup

    Supported types for field_value:
      - int, float, str, bool
      - colors: in Qt-compatible text form, i.e. in hex format or name
                (red, ...) (automatically detected from a string)
      - list/tuple:
          * the first element will be the selected index (or value)
          * the other elements can be couples (key, value) or only values
    NÚ
_fedit_dialog)r