print method.xyplot, is a list with the "class" attribute set
to "trellis". Many of the components of this list are simply
the arguments to the high level function that produced the object.
Among them are: as.table, layout, page,
panel, prepanel, main, sub,
par.strip.text, strip, skip, xlab
ylab, par.settings, lattice.options and
plot.args. Some other typical components are:[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Lattice, xyplot,
print.trellis