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.settings,
par.strip.text, strip, skip, xlab and
ylab. 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]
Lattice, xyplot,
print.trellis