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Simple Color
Palettes
The Simple Color command (?*r#U) provides a quick way
to select colors from a fixed, non-programmable palette.
The Simple Color command overwrites the current palette
with one of the fixed palettes below. When the Simple Color
command is in effect, the PCL and HP-GL/2 commands that
modify a palette entry (NP, CR, PC, ?*v#A, ?*v#B, ?*v#C,
?*v*I, ?*t*I) are locked out. A popped simple color palette
cannot be modified and the pixel encoding mode reverts to
“index by plane”. Only the IN or the CID (?*v#W)
commands can create a modifiable palette.
As shown below, a value field of 1 (?*r1U) creates a black
and white palette. A value of 3 creates an 8-pen palette in
Device RGB color space. A value of –3 creates an 8-pen
palette in Device CMY color space. All of these Simple Color
palettes are fixed and non-programmable.
Single Plane (value = 1)
Index Color
0 White
1 Black
3-Plane RGB (value = 3)
Index Color
0 Black
1 Red
2 Green
3 Yellow
4 Blue
5Magenta
6 Cyan
7 White
Using Palettes 3-11Using Palettes 3-11