Attention

TYPO3 v9 has reached its end-of-life September 30th, 2021 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.

You can order Extended Long Term Support (ELTS) here: TYPO3 ELTS.

Other resources

Beyond the general overview given in this chapter, other sections in this manual will be of particular interest to extension developers:

• Add Elements to the Content Element Wizard

• Using Custom Permission Options

• Namespaces