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                                                      288
            CHAPTER 4                                                                       Graphics



OPERANDS        OPERATOR       DESCRIPTION

c …c
 1   n
                SCN            (PDF 1.2) Same as SC but also supports Pattern, Separation, DeviceN, and
c … c name      SCN            ICCBased color spaces.
 1   n
                               If the current stroking color space is a Separation, DeviceN, or ICCBased color
                               space, the operands c1 … cn are numbers. The number of operands and their in-
                               terpretation depends on the color space.
                               If the current stroking color space is a Pattern color space, name is the name of
                               an entry in the Pattern subdictionary of the current resource dictionary (see
                               Section 3.7.2, “Resource Dictionaries”). For an uncolored tiling pattern
                               (PatternType = 1 and PaintType = 2), c1 … cn are component values specifying a
                               color in the pattern’s underlying color space. For other types of patterns, these
                               operands must not be specified.

c …c
1       n
                sc             (PDF 1.1) Same as SC but used for nonstroking operations.

c …c
 1   n
                scn            (PDF 1.2) Same as SCN but used for nonstroking operations.
c … c name      scn
 1   n

gray            G              Set the stroking color space to DeviceGray (or the DefaultGray color space; see
                               “Default Color Spaces” on page 257) and set the gray level to use for stroking op-
                               erations. gray is a number between 0.0 (black) and 1.0 (white).

gray            g              Same as G but used for nonstroking operations.

r g b           RG             Set the stroking color space to DeviceRGB (or the DefaultRGB color space; see
                               “Default Color Spaces” on page 257) and set the color to use for stroking opera-
                               tions. Each operand must be a number between 0.0 (minimum intensity) and 1.0
                               (maximum intensity).

r g b           rg             Same as RG but used for nonstroking operations.

c m y k         K              Set the stroking color space to DeviceCMYK (or the DefaultCMYK color space; see
                               “Default Color Spaces” on page 257) and set the color to use for stroking opera-
                               tions. Each operand must be a number between 0.0 (zero concentration) and 1.0
                               (maximum concentration). The behavior of this operator is affected by the over-
                               print mode (see Section 4.5.6, “Overprint Control”).

c m y k         k              Same as K but used for nonstroking operations.

            Invoking operators that specify colors or other color-related parameters in the
            graphics state is restricted in certain circumstances. This restriction occurs when

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