diag.plot(til, treat, p.s, w.ctrl, desc.unw, desc.w)
## S3 method for class 'ps':
plot(x, label = "", ask = FALSE, ...)
## S3 method for class 'dxwts':
plot(x, label = "", ...)desc.wts or the desc component
ps object, usually one returned from psTRUE then the graphics window waits for a
response from the user before showing the next graphplot.ps and plot.dxwts are wrappers for diag.plotps