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APPENDIX H                                    Compatibility and Implementation Notes



3.10.2, “File Specification Dictionaries”
 45. In Acrobat 5.0, file specifications accessed through EmbeddedFiles have a
     Type entry whose value is F instead of the correct Filespec. Acrobat 6.0
     and later accept a file specification whose Type entry is either Filespec or F.
 46. In certain situations, Acrobat 3.0 and greater do not correctly interpret file
     specifications referenced by the F entry in Form or Image XObjects. Spe-
     cifically, Acrobat ignores the file specification EF entry when that file spec-
     ification is referenced from the XObject F entry.
      Example H.1 shows an example of an Image XObject F entry referencing a
      file specification that in turn references an embedded file. Acrobat does
      not correctly interpret such file specifications.

Example H.1

       13 0 obj <<

          /Type /XObject

          /Subtype /Image

          /F 12 0 R

          …

       >> stream endstream endobj

       12 0 obj <<

          /Type /Filespec

          /EF <</F 10 0 R>>

       >> endobj

       10 0 obj <<

          /Type /EmbeddedFile

          …

       >> stream … endstream endobj


4.5.2, “Color Space Families”
 47. If an Acrobat viewer encounters an unknown color space family name, it
     displays an error specifying the name, but reports no further errors there-
     after.

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