| coef.plus | Extract coefficients and make predictions from a plus solution path. | 
| plot.plus | Plot method for plus objects | 
| plus | Fits linear regression with a quadratic spline penalty, including the Lasso, MC+ and SCAD. | 
| predict.plus | Extract coefficients and make predictions from a plus solution path. | 
| print.plus | Print plus() steps when predictors are added or removed. | 
| sp500 | sp500 |