There are some key files like robots.txt and .htaccess which are often tweaked for Drupal websites. These can be considered part of the 'scaffolding' of a site - they control the way the site works, rather than its content or design. Any new release of Drupal core that includes changes to them specifically mentions that they need updating, as those changes may have to be merged with any customisations made on your site. For example...
CM Drupal Contribution Challenge 2020
We've been busy recently, but that doesn't stop us at ComputerMinds contributing back to the Drupal community! For our latest multilingual website, we needed an XML sitemap with alternate links and hreflang attributes. This site uses separate domains for each language - for example, www.example.se (??) and www.example.no (??). Search engines need these alternate links to help them understand how to match up each translation of a page, which are distributed across these different domains...
So, it's perfectly valid to visit a site using a URL like: http://www.google.co.uk/////////// But some pesky SEO types will complain that the site is accessible at two URLs and that you need do a 301 redirect to the canonical URL (http://www.google.co.uk/). What you want to do is remove the trailing slashes using mod rewrite. If you really need to do this, then you can just pop the following in the .htaccess file that Drupal provides...