The Onyx Boox Annotation & Highlight Extractor plugin is a game-changer for book lovers who want to integrate their notes and highlights into their Second Brain. This plugin allows you to export your annotations from Onyx Boox eink devices, including title metadata, highlighted text, and annotations, and convert them into classic Zettelkasten notes in Obsidian. The plugin generates three types of notes: Reference Notes for book metadata, Literature Notes for highlighted text with metainfo, and Permanent Notes for annotated highlights linked to the original Reference Note and Literature Note. This means you can write your thoughts directly into the book you're reading and have them seamlessly integrated into your knowledge base.