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This document covers updating documentation (online and API) for the Symfony component of Drupal (adopted in Drupal version 8).
Background and Overview
In Drupal version 8, the Drupal Core project adopted several third-party libraries into its source code, including the Symfony web development framework. The Symfony library is under directory
core/vendor/symfony in the Drupal core source code (version 8), and other PHP-based libraries are in other directories under
If you find an error or omission in Symfony's documentation and would like to contribute to the Drupal and Symfony projects by fixing it (or at least pointing it out), the basic steps are the same as contributing to the Drupal API documentation: