creo4 Drawing Setup option documentation for: DEFAULT_DIAM_DIM_ARROW_STATE 
(hidden) (Also MBD)
symmetric_tol_display_standard
Controls the display standard of symmetric tolerances.
Default and Available Settings:
std_asme* - Applies American Society of Mechanical Engineers (ASME)
std_din - Applies Deutsches Institut fM-CM-
std_iso - Applies International Organization for Standardization (ISO)