This document provides an overview of the HTACCESS file and how it can be used for technical SEO tasks like redirects. It explains that the HTACCESS file allows configuration changes on a per-directory basis. It then gives examples of using the HTACCESS file to fix broken links, redirect between www/non-www versions of a domain, redirect to a new domain during a redesign, and implement WordPress rewrites. It also provides tips on finding the HTACCESS file, using an FTP client to edit it, and alternatives like a redirection plugin for WordPress sites.