Create form field appearances as a requirement for using fields in PDF/A.
Improved Tagged PDF import to correctly handle certain rare constructs which previously triggered errors in PDF/UA validators.
Tagged PDF and PDF/UA-1 enhancements according to the "Tagged PDF Best Practice Guide" published by the PDF Association.
Identify all deprecated API features in anticipation of their future removal.
Adjustments for new versions of operating systems and development environments.
Updates for most language bindings.
Adjusted the Block Plugin to v5.30 (available as part of PDFlib Personalization Server (PPS)) - supports the new Protected Mode in Adobe Acrobat (Sandbox Protection).