creo4 Drawing Setup option documentation for: DIM_LEADER_LENGTH_RATIO 
(Only MBD)
datum_point_size
Controls size of model datum points and sketched two-dimensional points.
Default and Available Settings:
0.3125* - Reverts to the setting established in the drawing_units Detail option; which has a default setting of inches. You can type a value for the datum point size.
|  The drawing_units Detail option determines the unit of measurement for the datum_point_size Detail
option. |