- TYPO3/Fluid ViewHelpers include description and simple code snippets in the comments
Example: https://github.com/TYPO3/Fluid/blob/master/src/ViewHelpers/AliasViewHelper.php
- This can and is used to generate documentation, for example https://docs.typo3.org/other/typo3/view-helper-reference/master/en-us/typo3fluid/fluid/latest/Cache/Disable.html