`markdown-it-toc-done-right` is a table of contents plugin for Markdown-it that generates semantic, accessible, and secure HTML output. It creates a `<nav class="table-of-contents">` element containing an ordered list of links to document headings, using placeholders like `${toc}`, `[[toc]]`, or `[toc]` in markdown source. This plugin is designed for developers who need a reliable TOC solution that produces valid HTML5, supports SEO and accessibility, and protects against security vulnerabilities like XSS attacks.