The Anki Sync plugin enables powerful flashcard creation and synchronization between your notes and Anki, using a flexible, markup-based syntax. Unlike traditional solutions, it allows cloze deletions within LaTeX math and code blocks using custom blocks like `replaceblock` and `clozeblock`. Cards support rich formatting, including math, code, tables, and images, and are synced with options to create, update, or delete based on changes in your vault. Decks and tags can be set per-file or per-block, and the plugin also performs automatic backups of Anki decks before each sync.