creo4 Drawing Setup option documentation for: DEFAULT_ANSI_ORD_DIM_ALIGNED 
(Also MBD)
draw_cosms_in_area_xsec
Controls display of cosmetic sketches and datum curve features that lie in the cutting plane in planar area cross-sectional views.
Default and Available Settings:
no* - Does not show all cosmetic sketches and datum curve features that lie in
the cutting plane.
yes - Shows all cosmetic sketches and datum curve features that lie in the
cutting plane.