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                                                      631
          SECTION 8.4                                                                    Anno ta tions




                                                      Rect



                            18 pt                                                18 pt


                    Square annotation                                   Circle annotation


                                    FIGURE 8.8 Square and circle annotations



                TABLE 8.28 Additional entries specific to a square or circle annotation
KEY          TYPE            VALUE

Subtype      name            (Required) The type of annotation that this dictionary describes; must be Square
                             or Circle for a square or circle annotation, respectively.

BS           dictionary      (Optional) A border style dictionary (see Table 8.17 on page 611) specifying the
                             line width and dash pattern to be used in drawing the rectangle or ellipse.
                             Note: The annotation dictionary’s AP entry, if present, takes precedence over the
                             Rect and BS entries; see Table 8.15 on page 606 and Section 8.4.4, “Appearance
                             Streams.”

IC           array           (Optional; PDF 1.4) An array of numbers in the range 0.0 to 1.0 specifying the
                             interior color with which to fill the annotation’s rectangle or ellipse. The number
                             of array elements determines the color space in which the color is defined:
                                    0   No color; transparent
                                    1   DeviceGray
                                    3   DeviceRGB
                                    4   DeviceCMYK

BE           dictionary      (Optional; PDF 1.5) A border effect dictionary describing an effect applied to the
                             border described by the BS entry (see Table 8.18).

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