Headings are normally used for page or section titles and are a big part of making your website SEO friendly and more accessible. For these reasons, headings need to be carefully planned.
As a Front-End developer, working with Twig and Drupal is a pretty liberating thing which presents all kinds of posibilies, but it can also open the doors to breaking things Drupal counts on.
There are times when building a Drupal site you need to dynamically point to an asset or resource that may not be saved in the database but instead is located somewhere in the site's file system.