Adobe created a plug-in for Acrobat 5 called Adobe Makeaccessable (see:
http://www.adobe.com/support/downloa...jsp?ftpID=1161
To quote from Adobes site:-
Characteristics of a tagged PDF:
- Page content is contained in a logical read order
- Word boundaries explicitly identified
- Font encodings mapped to standard font encoding
- Includes a structure tree comprised of a standard set of tags
Benefits of a tagged PDF:
- Can be read by a screen reader for greater accessibility
- Document reflow
- Can be saved as Rich Text Format (RTF).