Each sample in the table can be explicitly included or excluded from a new set with check boxes. There are also “include all” and “exclude” options that check the corresponding boxes and then allow the user to uncheck them.
Hackett is a good example case for this -- if there are both ZEV and GEV samples for a given regulator, how in the VirtualDB filter interface can we set filters that apply to only that 1 regulator, but not another?