The use of .htaccess redirection has already been mentioned in the context of implementing pseudo-static links for Discuz forums using Rewrite rules in .htaccess. Now, let's take a more comprehensive look at .htaccess. The .htaccess file is a very powerful distributed configuration file for Apache servers. Properly understanding and utilizing the .htaccess file can help us optimize our own server or virtual hosting environment. For example, you can use the .htaccess file to create a custom "404 error" page, change many server settings, and all we need to do is add a few simple commands to this text document.