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.
Using and setting TypoScript¶
See Introduction for an introduction to TypoScript and Templating.
TypoScript templates mainly consist of the Constants and the Setup field. Each template can include other (static) templates, which can again define values in their own Constants and Setup fields.
The TypoScript template configuration can be viewed and edited in the WEB > Template module.