Using attributes in templates
Documentation on using attributes in twig templates.
Resources
Creating Sub-Themes
Drupal sub theme documentation.
Securing file permissions and ownership
Drupal documentation for setting linux file permissions.
Inotify Watches Limit (Linux)
How to increase inotify watches limit in Linux for PHPStorm.
CSS File Organization: Aggregating CSS
Documentation on how css aggregation works.
Policy on 3rd party assets on Drupal.org
Policy for including 3rd party code.
Additional layout builder modules
Drupal list of additional layout builder modules.
Running PHPUnit Tests
Drupal documentation for PHPUnit tests.
6.15. Concept: Text Formats and Editors
Drupal user guide for text formats and editors.