GroupDocs team is glad to announce another monthly release of document annotation API, where new file formats are introduced in supporting document format list and also new features are introduced . The latest GroupDocs.Annotation for .NET 17.6.0 API now provides support to annotate VSD and VSS Diagram file formats along with Improvements and Fixes. We recommend our user to download the latest API release to use new exciting features and enhance their application with GroupDocs....support like Arrow Annotation, Area Annotation, Text Field Annotation...for Diagram documents Included Area Annotation for Diagrams Resource...