.BG
.FN postscript
.TL
postscript: Device driver for PostScript\(tm printers
.CS
postscript(width, height, horizontal)
.PP
.AG width
Width of plotting region in inches, defaults to 7.5 if `horizontal' is FALSE,
10 if `horizontal' is TRUE.
.AG height
Height of plotting region in inches, defaults to 10 if `horizontal' is FALSE,
7.5 if `horizontal' is TRUE.
.AG horizontal
Horizontal orientation, default FALSE.
.PP
This function is a device driver that produces a file of
commands in the PostScript\(tm language.
This file is named "PostScript.out" and would usually be sent directly
to the PostScript\(tm printer via a command such as
.PP
lpr -Pps PostScript.out
.PP
The `postscript' device driver supports variable character sizes,
general string and character rotations, line styles, line widths (use
parameter lwd=),
and area fills. the `col' parameter controls shading of lines, text, and
area filling: color 1 is black; colors 2-10 are a gray scale
from 90% black to 10% black; color 0 is white and can be used to overplot
dark areas.
.PP
Note that `postscript' appends to the file "PostScript.out" so it is a good
idea to remove it after you have printed it.
A device must be specified before any graphics functions can be used.
.EX
postscript
plot(hstart)
q	# exit from S

lpr PostScript.out
rm PostScript.out
.KW graphics
.WR
