Using |h has the same effect as |H but does not expand the field to 8 digits for editing. Instead, it "guesses" at the century. If no other hints given, it will guess 20xx for xx < 60 and 19xx for xx > 60. If you specify |D it always assumes 19xx.

Note: You may use SBR=CCYY:## to change the YY cutoff for assuming 19xx vs. 20xx to ## (instead of 60.)