RecAPI
History of Main Features

New Features in OP CSDK 15.0
New Features in OP CSDK 16.0
New Features in OP CSDK 18.0
New Features in OP CSDK 19.0
New Features in OP CSDK 19.20
From version 20.0 separated documentation is accessible for new features: What's New in OmniPage CSDK.pdf.