APPENDIX H
1130
Compatibility and Implementation Notes
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.