D_GEN_DEADLINE.rfa (Revit 2015)
The deadline family has 2 data entry parameters:
DateA and DateB. Family expects DateA to be earlier than DateB by default.
It has 2 check parameters:
DateAcheck and DateBcheck. These parameters show how the family interprets the dates we've entered.
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He has also made a Calendar family:
D_GEN_CALENDAR.rfa (Revit 2015)