| group.lines | Plot function for grouped data | 
| group.plot | Plot function for grouped data | 
| group.plots | Plot function for grouped data | 
| group.points | Plot function for grouped data | 
| HIV | HIV viral load study | 
| predict.QRNLMM | Predict method for Quantile Regression for Nonlinear Mixed-Effects (QRNLMM) fits | 
| QRNLMM | Quantile Regression for Nonlinear Mixed-Effects Models | 
| Soybean | Growth of soybean plants |