| Asords | Asymmetric Second Order Rotatable Designs |
| CCD_coded | Central Composite Designs (CCD) with coded levels |
| CCD_original | Central Composite Designs (CCD) with original levels |
| Pred.var | Function for generating the moment matrix and variance of the predicted response |
| SORD_coded | Second Order Rotatable Designs with coded levels |
| SORD_original | Second Order Rotatable Designs with original levels |