p.hboxp.RdAdd a horizontal boxplot to the current plot. This is mainly an
auxiliary function for histBxp, since
boxplot(*, horizontal = TRUE, add = TRUE) is usually
much preferable to this.
p.hboxp(x, y.lo, y.hi, boxcol = 3,
medcol = 2, medlwd = 5, whisklty = 2, staplelty = 1)....
boxplot(**, horizontal = TRUE, add= TRUE).
## ==> See code in 'histBxp' (.) and example(histBxp) !
##