The Orthography plugin for Obsidian helps users with grammar and spelling by identifying and suggesting corrections for errors in text. This plugin searches for spelling mistakes and provides options for correcting them with a single click. It is currently in alpha, with some instability and limited support for only English text. The plugin includes a personal dictionary feature to save custom words and integrates with Grammarly for added functionality. While the plugin does not yet support 'Live Preview' mode or mobile styles, it aims to offer dialect selection and a plagiarism checker in future updates.