Nothing
chi <- chi(wavesurge)
par(mfrow=c(1,2),pty="m")
res <- plot(chi,mainChiBar="Figure 8.11 of Coles (2001)\nChi Bar")
plot(chi, show=c("Chi"=FALSE,"ChiBar"=TRUE))
plot(chi, show=c("Chi"=TRUE,"ChiBar"=FALSE))
expect_equal(res, NULL, label="plot.chi:checksuccessfulexecution")
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