How to specify 'clockwise' or 'counterclockwise' in Design Table for Helix feature

I'm usign Design Table for Helix Curve for two configs.:
One is 'clockwise'
Another is 'counterclockwise'

How can I specify it in Excel's design table? (eg. D?@Helix = ?)

By the way, do you konw is there any table in Solidworks's help
for definitions for SolidWorks' features parameters?

Thanks a lot
HowardSolidworksConfigurations design Tables