"pair"
"plot"(x, sortdif = FALSE, ra = "auto", main = NULL, col.lines = (1:dim(x$threshold)[2]), type = "b", xlab = "items", ylab = "logits", pch = (1:dim(x$threshold)[2]), las = 3, cex.axis = 0.8, ...)
"pair"
"auto"
(default) or an numeric, defining the (logit) range for y-axisplot
plot
plot
plot
plot
plot
plot