SECTION 4.3
221
Graphics State
KEY
TYPE
DESCRIPTION
OP
boolean
(Optional)
A flag specifying whether to apply overprint (see Section 4.5.6,
parameter that applies to all painting operations. Beginning with PDF 1.3,
there are two separate overprint parameters: one for stroking and one for all
other painting operations. Specifying an
OP
entry sets both parameters un-
less there is also an
op
entry in the same graphics state parameter dictionary,
in which case the
OP
entry sets only the overprint parameter for stroking.
(Optional; PDF 1.3)
A flag specifying whether to apply overprint (see Section
this entry is absent, the
OP
entry, if any, sets this parameter.
(Optional; PDF 1.3)
The overprint mode (see Section 4.5.6, “Overprint Con-
(Optional; PDF 1.3)
An array of the form
[
font size
]
, where
font
is an indirect
reference to a font dictionary and
size
is a number expressed in text space
units. These two objects correspond to the operands of the
Tf
operator (see
and is an indirect object reference instead of a resource name.
(Optional)
The black-generation function, which maps the interval [ 0.0 1.0 ]
to the interval [ 0.0 1.0 ] (see Section 6.2.3, “Conversion from DeviceRGB to
(Optional; PDF 1.3)
Same as
BG
except that the value may also be the name
Default
, denoting the black-generation function that was in effect at the start
of the page. If both
BG
and
BG2
are present in the same graphics state param-
eter dictionary,
BG2
takes precedence.
(Optional)
The undercolor-removal function, which maps the interval
[ 0.0 1.0 ] to the interval [
−1.0
1.0 ] (see Section 6.2.3, “Conversion from
(Optional; PDF 1.3)
Same as
UCR
except that the value may also be the name
Default
, denoting the undercolor-removal function that was in effect at the
start of the page. If both
UCR
and
UCR2
are present in the same graphics state
parameter dictionary,
UCR2
takes precedence.
op
boolean
OPM
integer
array
Font
BG
function
BG2
function or name
UCR
function
UCR2
function or name