8.4. - pO# select pen
changes the pen used for drawing on the pen plotter. Since many pen plotters have more than one pen, you may have pens of different thicknesses or different colors installed.
p#No arguments are used. For the
#
sign, enter an integer greater
than or equal to zero and less than 1,000 to identify the pen position.
(Higher pen numbers are interpreted by graphics filters to control
other features, such as line width.) Refer to your pen plotter manual
to see how pens are numbered.
When selecting one or more pens as part
of a string of plotting commands, insert the pen numbers in the string
rather than including them as arguments.
For instance,
p2alt1p uses pen 2 to draw the axes, labels and title, and pen 1 to draw the
points.
The
p# command is comparable to the
select filter line style
command,
z#, described in Chapter 9.