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APPENDIX H                                   Compatibility and Implementation Notes



F.3.2, “Shared Object Hint Table”
185. In Acrobat, item 5 in the header section of the shared objects hint table is
     unused and is always set to 0.
186. MD5 signatures are not implemented in Acrobat; item 2 in a shared object
     group entry must be 0.
187. Acrobat does not support more than one shared object in a group; item 4
     in a shared object group entry should always be 0.
188. In a document consisting of only one page, items 1 and 2 in the shared ob-
     ject hint table are not meaningful; Acrobat writes unpredictable values for
     these items.

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