2012

In a named plot style table, the NORMAL plot style represents an object's
default properties (no plot style applied). You cannot modify or delete the
NORMAL style.
Set Color, Screening, Grayscale, and Dither in Plot
Style Tables
You can use a plot style to assign color, screening, grayscale, and dither
properties.
Assign Plot Style Colors
The default setting for plot style color is Use Object Color. With this setting,
the object retains its layer or individually set color. If you assign a plot style
color, the color overrides the object's color at plot time. You can specify one
of 255 ACI colors, a true color, or a color book color. The plotter must be
configured for True Color if you want to plot True Color plot styles.
NOTE If you use a plot style table saved in AutoCAD 2000 or later, the True Color
values change to the nearest match in the current release's palette.
Use Screening
You can select a color intensity setting that determines the amount of ink
placed on the paper while plotting. The valid range is 0 through 100. Selecting
0 reduces the color to white. Selecting 100 displays the color at its full intensity.
Screening is effective only if your plotter is configured to plot colors or
grayscale. Also, dithering must be enabled.
Use Dithering
A plotter uses dithering to approximate colors with dot patterns, giving the
impression of plotting with more colors than the ink colors available in the
plotter. If the plotter does not support dithering, the dithering setting is
ignored.
The most common reason for turning off dithering is to avoid false line typing
from dithering of thin vectors and to make dim colors more visible. When
you turn off dithering, colors are mapped to the nearest color, which limits
the range of colors used for plotting. Dithering is available whether you use
the object's color or assign a plot style color.
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