determines whether the set datum is attached above or below the geometric tolerance control frame.
defaults and available settings
- on_bottom* - places set datum on the bottom of the control frame.
- on_top - places set datum on the top of the control frame.
note
to be able to attach set datum to geometric tolerances; the gtol_datums detail option should be set to either std_iso or std_iso_jis or std_jis. the default setting is std_ansi.
