\name{Fig.8.21}
\alias{Fig.8.21}
\title{
FIGURE 8.21
}
\description{
Construct Understanding Biplots Figure 8.21.
}
\usage{
Fig.8.21(ax=1); Fig.8.21(ax=2); Fig.8.21(ax=3); Fig.8.21(ax=6)
to obtain all four panels.
}