This function draws a box around the current plot in the given color
and linetype. The bty parameter determines
the type of box drawn. See par for details.
Usage
box(which = "plot", lty = "solid", …)
Arguments
which
character, one of "plot", "figure",
"inner" and "outer".
lty
line type of the box.
…
further graphical parameters, such as bty,
col, or lwd, see par. Note that
xpd is not accepted as clipping is always to the device
region.
Details
The choice of colour is complicated. If col was supplied
and is not NA, it is used. Otherwise, if fg was supplied
and is not NA, it is used. The final default is par("col").
References
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
The New S Language.
Wadsworth & Brooks/Cole.