| addpi | Plots of piFunction | 
| genPerms | Generate Treatment Permutations | 
| getVar | Compute Propensity Score Variance | 
| pba | Propensity-Biased Allocation | 
| pbaAgain | Propensity-Biased Allocation | 
| pcr | Propensity-Constrained Randomization | 
| piFunction | Get PBA Treatment Probability | 
| plotpi | Plots of piFunction |