"s_curves". 
"plot"(x, xlim = c(range(mapply(function(i) range(x[[i]][, 1]), seq(x)))),
	ylim = c(range(mapply(function(i) range(x[[i]][, 2]), 
	seq(x)))) * 10000, expoints = NULL, 
	xlab = "Maturity (years)", ylab = "Spread (basis points)",
	lwd = 2, lty = 1, main = "Spread curves", ...)"s_curves".plot.default.plot.default.par.par.NULL).plot.default.plot.default.title.par.plot.df_curves, plot.fwr_curves, plot.spot_curves