creo3 Drawing Setup option documentation for: GTOL_DATUM_PLACEMENT_DEFAULT

gtol_datum_placement_default

Determines whether the set datum is attached above or below the geometric tolerance control frame.

Default 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.

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.