Which functions shoud be plotted! Default is all. They will scroll
by, so you have to take care explicitely what you want to be produced. See,
eg, par(mfrow = ...)
main
Header for the plot
xlim
x limits
ylim
y limits
xlab
x label
ylab
y label
new.data
At which covariate values?
...
Extra parameters passed to 'plot'
Author
Göran Broström
Details
The plot is drawn at the mean values of the covariates.