| SOP-package | Generalised Additive P-Spline Regression Models Estimation | 
| ad | Adaptive smooth terms in a SOP model formula | 
| f | Defining smooth terms in SOP formulae | 
| plot.sop | Default SOP plotting | 
| predict.sop | Prediction from a fitted SOP model | 
| print.sop | Print method for sop objects | 
| rae | Defining random effects in SOP formula | 
| SOP | Generalised Additive P-Spline Regression Models Estimation | 
| sop | Estimation of generalised additive P-spline regression models with overlapping penalties. | 
| sop.control | Function for controlling SOP fitting | 
| sop.fit | Fitting generalised linear mixed models with overlapping precision matrices. | 
| summary.sop | Summary method for a fitted SOP model. |